This is a serious concern for me right now. Some questions
1) The AI is very reluctant to tech trade things right now. It's to the point where I feel forced to turn it off. Here's my question- how does the AI tech trade with other AI's? Does it use the same amount of reluctance, or is it that one for one trade you see the AI offer the player occasionally. If it's the latter, I consider it a form of AI cheating- since it's something the player cannot do.
2) The other problem with the scenario is that it forces military rush tactics, since the best way to gain tech is to invade planets. Spying isn't cost effective since spies cost more exponentially.
This is the first time I've actually felt frustrated playing GCII, and makes me wish I had archived the patch so I could "patch back" This is something I've never felt a need to do with a game before.
Do I think DA is trash? No, but I think you might have overdone the tech trade AI and made it legitimately unfair? If I go heavy tech with resources being equal, I shouldn't be heavily outteched by every AI- which means something is up. That didn't happen before- and it's not a good solution to counter something by limiting the options.