While I understand that I have the buffs that can be placed on buildings, I think that the leveling requirements for buildings are too high. By this I mean that is unrealistic to have to wait until at least level 17 before I can upgrade my first buildings. Leveling up in this game seems pretty easy and I know that most people seem to only take about 2-3 days to reach the required levels, but having to wait around for resources because I can't level my buildings is very inconvenient, and may put players off. This seems like a fun game, and I could spend hours playing it, but this is an issue that needs to be resolved. Basic buildings should take basic or intermediate supplies to upgrade. Intermediate buildings should take intermediate supplies or advanced, and so on and so forth.

