Decided to go in depth on each of the potential landing sites for us, and why I think that Azshara is the best one in the long run.
First off I want to get two points out of the way. 1) We will be a costal nation. Our leadership is Kul Tirian, there is going to be a heavy bias among our officers and leaders to be on the coast. Also the religion we, Jania Proudmoore, follow requires a coastline of some kind. If we moved our capital inland we would likely have to keep an outpost on the coast just to protect the Tidesages, which would split our forces up massively. So the best and easiest way to go is to stick to the coast.
2) We are going to land on the west shore of Kalimdor. We do not have the stores or popular morale to go around the southern tip of Kalimdor. To do so would be to invite mutiny even more than rationing does. If we see land, that land is where we are going to make our home. We cannot put off landfall for more than like, a day or so after we reach Kalimdor.
Okay so, next let us look at the main body of our population. Since we are mainly Lordaeronian that means that most of our population are going to be European Style Peasant Farmers. They are used to working fields of crops and living in small villages. Their skillset is based on doing this. The Gilnean and Kul Tirian populations are likely mostly the same. Some of the Arathi might be herders, used to moving between two regions with flocks of sheep or goats or cattle. This is, however, going to be a small part of the population. Only a small subsect of the Stormics, who are already a small subection of our total pop, are likely herders. Thus we can draw the conclusion that style of agricultural production most well known to our people is European style field farming. We need to keep this in mind when picking out a location to settle down, as it takes a long time to retrain someone from one style of agricultural production to another, and they tend to not be that good at the new style.
So, in no particular order, here are our choices.
1. Durotar: A pretty terrible choice, if I'm being honest. The ground does not seem that fertile and the climate is swelteringly hot and dry. Thrall settles here out of some weird guilt 'we must prove ourselves' complex. If it is rough for Orcs then it is going to be miserable for humans. The main agriculture seems to be the herding of pigs, aka not out strong suit. It is also already inhabited by the orcs and trolls. This will instantly throw us into the 'do we restart the Race War or not' debate that plagued Jania in canon, and without the few months of her building up that let her actual defy her father. If we do settle in and make peace with the Horde we'll be close to our allies, though our population is gonna be low and we're in danger of just getting culturally swallowed up by the Horde.
2. The Barrens: Durotar but without any redeeming qualities. Its a dry shithole that seems to only be capable of barely sustaining herding, with most settlements here being military outposts or resoruce extraction sites. There are some minerals and lots of oil, but Kul Tirian ships don't use oil and all of Kalimdor is rich in minerals. If we had to settle here, we should pick were Ratchet is in WoW. Even then we'd be pretty much stuck on that stretch of coastline, with no real way to expand out into the Barrens proper. Also a good way to get involved in an endless hellwar with the Quillboar, who are unlikely to be psyched that we just showed up on the doorstep of their most holy place. Only not the worst option on the list because Tanaris exists. Also no trees for shipbuilding
3. Tanaris: Its a fucking desert. No trees, no arable land, no potential friends nearby. Tanaris is a hellscape and I don't understand how Gadgetzan survives post fall of Kezan. The only good qualities is that it has salt flats, some minerals and is close to Ungoro. On the other hand, landing here basically means that we are locked in a closet with the Farraki and we don't get to leave until one of us is dead. The Sand Trolls are xenophobic in the extreme and any peace will come because we fucking destroyed Zul Farrak and chose to not wipe out a vassal population of them. I don't think that getting into a massive, life or death war literally right off the boat is the move. Also its right next to the Caverns of Time, and while in modern WoW the Bronze are nice boys, those who have played Classic will remember that they start off attacking strangers on sight. Also we're kissing cousins with the Silithid. Its a hellscape and we should not land here.
4. Dustwallow. Surprsingly second best, but that is damning with faint praise. Dustwallow is kind of a hellscape. For one thing, its a goddamn swamp. Its a pit of disease and filth that we probably don't wanna deal with. Also its full of goddamn giant spiders and the fucking Black Dragonflight. Onyxia is literally Right There, just Vibing. We cannot defeat Deathwing's Daughter. At BEST we'll get a phyrric victory if we fight her. She is a ticking time bomb to any attempts to settle Dustwallow and could blow up at any second. However its not all bad. First off: holy shit trees. This is one of the few places on the western coast of Kalimdor that actually lets us rebuild our fucking fleet. Trees are insanely nice to have on Kalimdor, and we don't have the fistfight the Nelfs to get them. And while Dustwallow, being a swamp, is shit for agriculture right now, it doesn't have to be. Draining the swamp around OTL Theramore will result in very productive farmland. A properly managed and controlled Dustwallow is very easily an amazing nucleus for a large, expansive empire.
Eventually. The main issue is that, while Dustallow is best in the long term, its fucking terrible in the short and medium term. Swamps are awful to live in and it will cost insane amounts of time, money and manpower to drain the marsh and create fields and orchards in its place. I know SV loves going for the super long term solution, but in the long term we're probably dead of fantasy cholera. Or killed by FUCKING ONYXIA. Holy shit. If you'll forgive the pun, we do not want any of that smoke. Dustwallow comes with a loaded gun pointed directly at out temples. ONyxia waking up means that either our city gets burnt to the ground OR a hot lady with a nice rack makes use of any social fissures in our new society to rip us apart from the inside. And, if you'll remember canon, Theramore was plagued by massive societal fissures based around Jania deciding that race war was cringe. We do not want Onyxia doing what she did to Stormwind in canon to us. Dustwallow could be nice, but in my opinion the negatives outweigh the positives.
5. Azshara: Finally, some good fucking food. Azshara is the best we are going to get. Reason one: Trees! While not as thickly forested as the Marsh, Azshara has goddamn trees we can use to make ships and housing. As I said earlier, the culture of our ruling class will make us drift heavily towards being a naval power, so having access to timber is amazing. Also Azhara seems to be relatively fertile. Not amazingly so, and certainly not as good as a drained Dustwallow would be, but we can farm it without doing the back breaking labor of draining a swamp. Azshara is also littered with cool ass Night Elf ruins. These are both amazing as arcehological finds and also are Very Very Nice to use as temporary shelters and housing for our people. If I'm gettting my Warcraft timeline right, the Naga have not surfaced in real force yet, so all we need to do is clear out some Murlocs and Mukara and we have a prebuilt city to use.
To continue on, Azshara is amazing for future diplomatic endeavors. We're a comfortable distance from Durotar, mountains make great borders, so if we go the canon route of Jania deciding that race war is bad we can easily access our Horde allies without being in danger of getting absorbed by them. We're also right next to the Furbolgs. They do start out as unfriendly, but unlike the Dragons it should be slightly easier to treat with them. And since our leader is Jania 'I Love Making Friends' Proudmoore I have high confidence that we will succeed. With Furbolg help we can probably get access to talking with the Nelfs and work on getting a good rapport with them. Both so that we can maaaaaaaaybe start to log Ashenvale just a little bit, and also so that we can leverage our geographic position to make Thrall and Tyrande sit down and talk out their issues like adults. Azshara is perfectly positioned for us to act as a bridge and meeting point between the Night Elves and the Horde.
Of course, it does have its downsides. For all the good things that come from being right next to the Night Elves, a lot of bad comes as well. Until we actually get them to talk to us, venturing further west is gonna be dicey. And Azshara isn't free of threats. The Legion is coming, and Azshara is closeish to the frontlines. As well we have Satyrs about, and possible Sea Giants as well. Neither are insanely dangerous threats, and won't fucking engage in a death war the second we touch down like the Farraki will, but we will come into conflict with them sooner than later. However, I think that the positives outweigh the negatives. Azshara is the best landing zone, due to its natural resources, fertility and geographic position. It has a chance to be nearly as good as Dustwallow long term, without us having to put in herculean effort to make it so.