Playing in the most recent beta (4) as the Altarians, I've noticed a few problems. I researched the entire terror star line, but when I try to trade it for some juicy terran tech, the terrans complain with "it seems silly to include terror star IV when you are already trading terror star V".... This would be fine except that terror stars require ALL 5 of the techs or they don't work. I really want my Terran allies to have terror stars (though I'd like something in return) because the Drengin have just really gotten on my last nerve. Funny how that happens when you are fighting a near eternal war....
Dread Lords need to be less giving of tech to lesser races. They appeared early in my game and made peace with several races after a few turns. In these peace negotiations, the Drengin grabbed death rays. This was while the rest of the galaxy was still researching lasers. It has taken me extreme amounts of effort to stay alive as a result. Fortunately, the tables have finally turned now that both the terrans and I have nightmare torps and ultimate invulnerability shields.
I've also had a few random crashes, but for some reason Smart Exception didn't catch them? The game would lock up, and a few moments later Vista would tell me the game is not responding (like duh!) and thus close the program. No message from SE at all.
Lastly, I set the tactical view zoom level and detail view zoom level to both 100. I was assuming this would make it so that I am always in detail view, which it does. However, every time I load up the game, I have to remind it that it's set to that by wiggling the controls slightly. If I don't, the tactical view is on for every zoom level.