One thing I didn't like about GalCiv II (and this applies to SD games in general) is the sheer amount of crappy units the AI tends to generate, which serve as nothing more then speedbumps.
I doubt we'll have this problem, considering that Frogboy said this:
"I don't plan to have the AI design ships in GalCiv III in the sense it did in GalCiv II. I will give it a bit of a try but the ships have a lot more sophistication to them this time (very easy for a human but much harder for a computer, traveling salesmen problem here). Instead, I am planning to have the AI look at every ship design any player has ever designed and do evaluation on that and pick from that. So the better players get at designing ships, the better the AI will get."
Instead, the AI will spam lots of mediocre to pretty good ships, which serve as nothing more than a speedbump for our ultimate ships of doom. Which are, in turn, used by the AI next game, utterly crushing us.
In all seriousness, I really hope Frogboy's plan will fix this. It got really annoying sometime.