I've only played 2 games on small random maps, but I have to say that so far the game is pretty damn incredible. The unit AI is better than any other RTS I've ever played. My units actually react pretty intelligently to whatever situation they're in. They work in conjunction with each other and play to their strengths.
The interface is great. I'm always finding more shortcuts to doing things. Very impressive. I was originally worried about the pace of the game, being an RTS instead of turn-based like GalCiv2. They seem to have nailed it pretty well though. Things don't move so quickly that you can't react. Your units tend to take care of themselves for the most part, so you can focus on expanding and developing to secure your position.
Did I mention that it looks fantastic? Well it does
"The whole problem with the world is that fools and fanatics are always so certain of themselves, but wiser people so full of doubts." -- Bertrand Russell (I think...)