i am thoroughly impressed with this game so far. at a mere 55megs or so for the beta it is still a very fun game.
the only real problem i have seen so far is some text over-lapping on some screens. mouse control seems a little too fluid even with the slider bar adjusted. these are minor issues though. the one suggestion i can offer for the full game is to offer a more elaborate campaign mission or a conquer the universe mode like other 4x space games like Space Empires or Masters of Orion.