Have you gotten around to reading those ideas Mr Devourer of Brains? Mostly curious for feedback and all.
It's a good back story and concept for the research tree's. On the TEC, Advent and Vasari integration trees having a heavily pre-requisite based tree where you can jump advancements in integration would be interesting. This way if you could mixed bag it or focus on higher tier TEC from the factions. Though all research would be available if the game went on long enough.
Not sure how the Alliance type tech tree would fit as it seems the integration research techs would sorta fill that purpose.
plus the number of research tree's are fixed... 3 military, 1 defense, 3 civilian, 1 diplomacy and 1 fleet.
I could see the 3 civilian and military be the Advent, Vasari, Tech integration type paths. Defense might be somewhat interesting like integrating moving technology with a TEC starbase buildout, etc. There's lots of defense Technologies that could be integrated.
Diplomacy really doesn't need to change too much really.
Now design me out the research trees for this and I'll build it 