Those of you who have seen Star Trek, Andromeda, Babylon 5 and so on knows that there are a command structure in their fleets. I think you should impliment this in the game. Not an advanced one but like in Hegemonia or like in Imperium Galactica 1-2. Where you have lets say, One commander wich gives you.. lets say +2 in attack skill or something like that.
As you know there must be someone that runs a fleet and all of them cant be equally good. And the turns are just week wich makes it very likely to have a command structure. Occasionally there would be a promotion, request or something like that wich will make other "heroes" avalible. Not hereos at such but just fleet commanders.
Well you get the picture