Well, I do not believe that this actually happens, one has to wonder why not? The constructor is the ship that goes out and constructs the base with attached material or what it can haul? Why have the ship used up its not a colony ship, so the ship does not have to be used for the initial colony...
So look at the constructor as an upgrade... goes out does its deal, comes back to planet, gets a "refit" that allows the constructor to head back out to do another upgrade, you can automate (governor) this also to do the same starbase. Hence less micromanagement of the constructor force.
This leads us back to more about this post and adds in ship design into the equation. You could have a slow constructor that has two or three construction modules and goes to one, two or even three sites, spends a week or two or three (each module taking a week to add, basically a turn)
Anywho, something for an add-on maybe or dare I say (like most of the ideas I expound on due to their complexity and time constraints) GC III?
W/R
Suralle Straykat
Kat Lord @ Large