Finally!! I can have slaves!
I particularly like the descriptions of the Drengin science techs, some of that stuff is priceless.
The new tech trees are awesome and its great to see a little bit of character finally creeping into the game...
I like the tech trees so far but i feel that there is not huge amount of real differentiation yet, especially when it comes to weapons and defences. I would love to see a return of the alignment driven techs from gal civ2 especially the weapons and defences. that way when i have a Drengin ship with evil death rays i can feel like a real galactic A-Hole and not just a wannabe with the same "humane" weapons as the food.
TLDR: new tech trees are great but want MAOR esp weapons and defences... nothing wrong with a bit of a-symmetry.