[raynor]

Could you perhaps explain yourself a little better? Maybe my brain isn't working so well after a big mid-day meal.

I read that option to mean that if my empire's default planet type is rock, then that is all I will ever be able to build colonies on regardless of technology. I won't be able to colonize ice worlds or gas giants. Sounds pretty good to me.

In other threads, some folks have complained that they had too many planets to manage. One solution is to alter the maximum number of planets per system. This option is yet another alternative. I think it will probably get quite a bit of use--especially in multiplayer games where folks don't want to face the tedium of managing a 300 planet empire with an interface designed for managing at most 60.