I've been working on my own custom race for awhile. (The Grand Imperialum 4 future reference) And I don't mean like one thrown together for a couple games then replaced by a new one, I mean a full completed, all out custom race. Own models, different improvements, completely unique techtree etc.
But after lots of little edits to everything, I find myself at a loss with ideas for my custom techtree. Now so much of how to do it, but WHAT to do it.
You see, I'm basing it off the Minor Race techtree (the classical techtree), and I'm revamping it to be much more friendly to getting huge bonuses to terrorforming and planet quality techs, while also beneffiting from a good bit of soldiering. While completely scrapping the influence line of the techtree. But that doesn't seemed "balanced enough" so I was wondering if you all had any ideas in helping along that path. Feel free to even suggest complete revisions to my tech tree 
For reference, The Grand Imperialum is basically wat I believe would happen (government/political wise) if the equivilant to the Roman Empire survived to this day, (1000 of years of political supression, sporadic expansionists wars, and frequent rebellions and under world dealings, lots of mixed culture with 0 interference other then anti-govt supression, helps keep the people from revolting, but makes for a weak unified culture).
However their modern policies are more like the yuuzhan vong of starwars (believe technology is inherently evil and corrupts people, have amazing terrorforming abilities that can translate into equally amazing combat skills and other bonus abilities)
Thanks for any help!
-Spyke