An important problem is going to be that there aren't that many human jaegers left after the Kaiju War, considering that the Marhall was already trying with retired vets and his own adopted daughter with zero previous experience is going to take at least a few years to rebuild the corps to the point they are a credible defense of Earth, much less to the point of creating a completely human expedicionary force. They will need to adapt the technology for other beings really, really fast.
At least they got experience adapting the tech to aliens, unwilling alien at that, so if should be doable to get some level of compatibility with other species, and for some reason I think that the first successful experiments are going to be with the Krogan.
Jaegers aren't the problem I think. They could probably cobble one together fairly quickly given Mass Effect level tech and the PPDC's demonstrated rapid turnaround capabilities and the spare parts they'd have to have on hand. Pilots aren't it either, since there were plenty of other candidates in that room when Mako and Raleigh were 'conversing'. I think the real bottleneck when it comes to piloting a Jaeger are a combination of Drift compatibility and raw talent. A factor that contributed to this was that the Jaeger program was in terminal decline. Their funding had been cut and Pentecost was pulling every shady deal he could to keep the program alive. Training new pilots, while important, was probably amongst the first things to go, since he's only got so many Jaegers to fill.
I figure the defense of Earth won't be a factor once the portal is closed off, and as MadGreenSon has pointed out, hope is humanities gift to the galaxy at large. Scrapping together a Jaeger and doing a drop on a high profile world, like Thessia or Palaven, achieves that magnificently. It shows the galaxy how the Kaiju can be taken to task and gives them the hope they need to knuckle down and get shit done. Humanity needs Jaegers to take down the Kaiju?
Done. We need to adapt this Drift technology for other species?
All over it. I figure they'd need a year or two to make it 100% compatible between the various species without negative feedback, which is long enough to give humans the chance to shine and short enough for Citadel species to get a piece of the action for themselves while the war is still hot.
There are zero functional Jaegers left at the end of Pacific Rim. They have plenty of parts left though!
Here's a thought I've been playing around with. The neural load from the Drift overwhelms the brain and nervous system if done solo. Does anyone think the super durable redundant nervous system of a Krogan would handle it better than most?
I was also thinking that, once they got used to the idea, Asari would be best at Drifting with relatively unfamiliar pilots due to mind melding being a big part of their culture anyway, being adaptable in that way would probably be a thing for them.
It's possible that Krogan in the Drift might work really really well due to all the redundancy. Then again, it might also work very much against it, since the Drift would have to account for all that added complexity and would need to be flexible enough to switch from one set of neural pathways to another on the fly as the Krogan physiology switches between them. It'll depend on how you want to play things and on how the Krogan will react. On the one hand, the idea of piloting a giant robot to beat the shit out of a giant monster is just so very
Krogan. On the other hand, it'll help the Citadel species that neutered them, so the hatred may well overwhelm the love for giant death robots. Oddballs like Wrex and some of the younger Krogan might go for it. Older Krogan and conservatives like Wreav would probably just put their feet up and happily watch the Kaiju traipse all over the Council and not lift a finger.
Hmmm. Perhaps a compromise is in order. It's possible for Krogan to pilot solo, but a two-pilot system is more efficient and capable than a solo pilot ever could be. The Drift is about coming together to beat the shit out of giant monsters, that we are stronger fighting side by side than we are fighting alone. A solo Drift undermines that concept, but can reinforce it if shown to be inferior to a two-pilot Drift. It also gives you the excuse to write Herc Hansen and Urdnot Wrex as Drift partners, and the universe may not be able to withstand the awesome there.
Regarding the Asari, mind melds vs Drifting et al...
I think that the Drift and melding are effectively two sides of the same coin, that they bridge the same gap but from opposing shores. Asari melding struck me as the exchange of thoughts, heritage, and ideas during the linkage of nervous systems. You can choose what to share and what not to, otherwise you'd have come across a situation where someone could be interrogated via embracing eternity and that's more or less rape so let's not go there.
The Drift meanwhile seems rather different. You don't share thoughts, heritage and ideas so much as memories, individual experience and raw
feelings. What gets shared and what doesn't is an involuntary process that neither party is fully in control of either, as demonstrated by Rabits. You also can't Drift with just
anyone, nor for that matter would you want to. Drifting with someone else is to expose the very core of who you are, to be truly naked before another soul. That demands a level of trust that the meld, as highly as the Asari and Council species might regard it, doesn't seem to require.
I suppose the best way to put what I'm trying to get across is that melds fulfill a biological purpose and tends to take semantic cues in service to that goal. The Drift fulfills a technological purpose and takes emotional cues in service to its goals. Both approaches link body, mind and soul, but do so from different approaches with different connotations. Asari will happily go forth and meld with half the galaxy before growing up, coming home and leading a perfectly fine life. Raleigh could hardly bear to Drift with another human being after his brother was killed. That doesn't mean that there aren't Asari out there who derive deep emotional cues from their partners during the meld, but the Drift really does remove
all the barriers and demand
absolute trust in a way that the meld doesn't appear to.
I could see Asari Drifting with their meld partners as having a vivid, quasi-religious experience, like they've only been seeing half of their partners until then and now they have the whole picture and love and trust them all the more for it. I also figure that the Drift would offer a safe way for being able to reach out and touch another mind for Ardat Yakshi, with the long-term consequence being that they finally find their niche in Asari society and are well regarded as warrior-poets who are born to go forth and slay monsters.