I agree, probably an update on this is coming out with the third faction and I would guess more improvements will follow past 1.0 . Hope they do get some early improvement on ally AI interaction though its fun currently to keep your ally alive in a 2v4v4 impossible AI setting map.

Keep in mind that Sins2 is an RTS that lightly dabbles in some 4x ideas. The game can't be won without destroying enemy units/planets. Not sure if that'll change later

From my experience in sins1, only the aggressive & defensive AI settings were viable - with defensive being better for the large map games I like to play on. Economic & Research didn't do anything besides serve as fodder.