You must be a young programmer.
Actually, I'm not a programmer at all, but a (unemployed) assistant tax consultant. I just picked up how to edit XML-files, because I got annoyed by some bugs during the beta for TotA.
Try and fix AI personalities for the Drengin, Yor and Korath then; I noticed in your mod they don't really expand that much beyond their influence borders, which gets them crushed. Just my 2 cents
That's a flaw in their AI personality itself. It doesn't like to expand into areas with strong foreign influence. You can see the same behaviour in the vanilla game. I wish, I could fix that, but we modders don't have direct access to the AI code. Even if we did, I'm not sure, if I could fix it anyhow. Like I said, I'm not a programmer.
Still, there are ways to work around this problem. The first one is to make sure, that they have a good amount of habitable worlds within their starting sphere of influence, and that there are no other races starting too close to them.
The second one is something I'm addressing in my next version: range. I removed the Basic Life Support module, among other things, which means, that the starting range of all races is much more limited. That should provide the AIP 7 races a leg up during colonisation, because the other races can't out-expand them so easily now. That change works out quite well so far during my tests.