No, it's not a "include a tactical part!" message..
I read on other posts about the Ship's capacity to fire at 360 degree, on any axis. Which is, (IMHO) a little impossible to achieve (specially for fighters or frigate I put all guns on the front).
Now, I don't want to sound like I could design my own game, but could the developpers include some of Homeworld's battle engines? the ships would still be automated, and you can't command them during battle.
But a squadron of small fighters could easily outgun a single huge ship, if that ship only use heavy weaponry (which would force any player to either support his huge ship with Gunships, or to design a Huge ship who has only a few heavy weapons, and a lot of light weapons, distributed on the hull)
Maneability on a fighter would depend on 2 things: the weight and the speed. The quicker the better, but if you use all your "size slot", your fighter would be kinda clumsy, less likely to avoid ennemy's fire.
Anyway, that's just a rock thrown in the pool. And I know it would be a MAJOR rehaul of GalCiv2. But what about in an expansion? or in GalCiv3?