So I guess sometime around pre-alpha is probably when this kind of comment would have been helpful. This is my single biggest complaint with GalCiv, though, so here goes...
I'm tired of constructors. The game mechanic that they are a part of has an important and interesting part to play, of course - in the territory grab at the beginning of the game, and in reinforcing your positions as the game progresses - but how is it fun to have to mindlessly send 30+ constructors after every starbase you build? You have to keep track of how many are headed for each base, how many planets you should be producing them at, etc., etc. It's a huge micromanagement headache. And it's not even satisfying micromanagement; it's just recordkeeping that you mostly have to do in your head (as there is no real in-game support for the task of managing starbase development).
What I would like to see is a more abstracted starbase construction model. Just require one constructor to build the thing. Adding modules after that should just be a cash transaction. Want some battle stations? Okay, that'll be 400bc. Mining barracks? 225bc.
If it's deemed necessary, there could be a limit on the number of modules that can be added per turn. Some could require multiple turns to build. I wouldn't see much point to this personally; after all, there's nothing to stop you from piling 30 constructors onto one square and building an enormous starbase in one turn using the current model, but I imagine some people would see this as being too easy or powerful or something. If you ask me it would just be convenient.
The only place I see any downside to this revised construction model is in that there is slightly less opportunity to intercept constructors en route to a base. However, anytime from about the midpoint of the game onward, the stack-o'-constructors = instant starbase tactic is pretty viable (and generally advisable, exactly because it reduces vulnerability to interception). Besides, the interception mechanic could still play a part, just an abstracted one - just increase the cost of adding modules to starbases outside of your own territory, or something like that. The increase could be proportional to the distance from your territory, even.
What it comes down to is that the current starbase construction model is largely a chore that detracts from my enjoyment of the game. It can be dramatically simplified and streamlined with practially no loss of depth. Here's hoping something along these lines makes it into one of the greatly appreciated continuing updates!