Someone else brought this up and at the time I thought just ok. Now that I am far into the game I see this as a must have change. We have to be able to build old buildings. I just conqured a planet and used Titalwave to do it. Well I took the planet with most of its building destroyed and when I went to rebuild the factory it is going to take 400 turns. That's crazy! I should be allowed to start with the lvl 1 factory and build my way up. Please allow us to select old buildings. Maybe put a filter on to help keep the list short.