1.Races are all the same, robots Yor eat food, need entertainment etc.
2.No alien speech sound whatsoever(should be contionuous alien speech loop like in K.O.T.O.R.)
3.Too much symbolism, billions of people stacked in one ship?!? Tens of billions dead upon invasion?
4.Absolutely no correlation with researched invasion technologies and chosen invasion types with the view of the invasion.
5.Appaling view of space battles, ships just unrealistically glide in all directions, without any concern to the physics of motion and propulsion, rays go out of nowhere...and most of the views are useless anyway.
6.Non existant possibility of coordinated attack with allies, and missing options, poor AI, for example you give transport ships to allies with just one planet left to conquer and they just park it on their planet indefinetly.
7.You can't put ship in orbit of uninhabited planet to guard it against other colonizers...
and so on....