We should also use a heavily population-dependant build rate.
Say, -90% for 1M people, +1% for every 5M people added after that.
Maxed out, giant planets would get +400% production, while the new colonies would only be good for research & resource extraction.
(And, yes, I am willing to generate the 500+ lines in settings.txt to make this work
)
Also, what would you guys think about having the resource extraction rate of the planet go DOWN when the population gets high (and full of planet-wide cities)?