[X] Yes this is an acceptable deal
[X] Yes, this is exactly what we wanted for them.
[X] Accept the offer to guarantee Reman succession. This would stabilise Remas politically and allow them much more continuity of purpose over successive emperors. However every peace turn there is a chance that if Remas were to enter into a civil war that you would be dragged in on the loyalist side.
[X] Accept the offer to support Remas Technologically. This would in effect provide Remas with the "turtle ships" and "crossbows" technologies and give them a distinct advantage over their human neighbours
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My logic, five turns is a reasonable time for Estalia to either figure out if it wants to keep Carcassone or let it leave, and in the mean time Lyonese can either go head to head with Couronne or try to take 16 and the Massif Orcal in the meantime since Mousillion and Carcassone are closed off to it.
This works great as it clears and saves us the trouble of dealing with 119 which helps us in the war and after. It doubles their territory and effectively creates a buffer state for Krakka Drakk to prevent the chaos tribes from migrating further down.
Honestly, I am really intrigued by this because not only is it a huge sign of trust from the Remans, it also helps reinforce that Dawi reliability is considered truly unimpeachable. Yeah we might get dragged into a civil war if they split hard enough but arguably that will mean we can strike hard and fast to ensure that the Remans don't lose too many people in said civil war, thus preventing the skaven from taking advantage.
I am also okay with giving the tech to Remas because even if they are an expansionist empire...they don't really have any effective ways to expand that aren't ways that help us.
They can't attack 33 without risking that we will come on the side of our ally...which we will, thus messing with the Reik is right out. That leaves the west with the Skaven which, hey, if they keep butting heads against the skaven I'll be more than happy to give them new toys to do it with.
They can also go east with more of the livable badlands which again, works out fine for us as they will get the lowlands and we get the mountains and it's a great buffer state for the Tomb Kings as well as Nagash, who we're going to have to deal with when the war with the skaven is over. So the more territory the Remans are committed to protecting and defending, the better in my mind.
They could go straight south and attack the Arabians which...I legit don't think we'd care about as the only dealings the Dawi have with them are as either pirates or...not pirates.
All in all, the chance to make a more effective buffer state to our south as well as getting the chance to influence and keep the Reman empire's succession even and dwarf aligned is a rare chance.
Edit: So far my reasoning hasn't changed and the arguments against amount to little more than "They *might* attack other humans." and "They're based on romans, of course they're going to expand against their neighbors." both of which I feel heavily rely on ignoring the setting as well as quite frankly our priorities.
We *do not care* if the humans fight amongst themselves as long as they do no harm to Dawi. What matters is the humans being as effective buffers against the skaven and the greenskin as possible. Plus, as has been pointed out, it will take little to no time for our pov for the tech to spread and thus we will be granting it to all humans through the Remans which is good for us.
As for getting involved. Being able to ensure smooth and reliable succession for one of our more powerful human neighbors is a powerful, POWERFUl tool of influence and perhaps the best way to ensure that the Reman empire keeps our desires and wishes in mind because we will quite literally be one of the pillars they rely on for stable transitions. The remans are never going to be big enough for a civil war to be a truly daunting affair and even the threat that the Dawi empire will come down on you if you pick a fight for the throne will make most think twice about doing it