Builder's Union

I know the idea of a builder boost has been brought up time and time again... I have even brought it up myself once. I don't want to read replies to my post stating that I am beating a dead horse. I know!!! Having said that, an alternative to this very popular suggestion might be to add an additional builder or builders to one single construction project to speed things along. So that supercell retains profits add the ability to gem each one for the divided Gem total of the finished project.