I still think the tech trading system needs to be completely revamped- it's poorly designed at the moment.
Would it be possible for the AI to tech trade like a human, under the same rules as the human? I'd rather have it do that then the current system. As it is now, I feel obliged to turn tech trading off.
That's something that will have to wait for GC3.
GC2 has been a great game, but if GC3 goes towards the evolutionary path (which I'd prefer actually- as there's still room for improvement even with TA- which is one of the best XPs I've seen so far), there are several concepts I'd like to see expanded or revamped- some big, some small (the survey ship anomalies feel ripped from GC1 at the moment)