MauiSon said:

I don't know if tower ranking is important to anyone, since there are no rewards, but I would like to suggest that rather than speed to level 100 ( or any level) being the criteria, number of chests won be the primary determinant (with speed the secondary factor). For a few reasons, including the size of the prize and the participation/coordination required, this would be a better method for ranking. 

Hello! Thanks for your suggestion! It sounds interesting, however, the current criteria seem to be a good one, too. So, the game team doesn't plan to change anything here, I'm afraid. I'm sorry if my reply has disappointed you. Anyway, good luck in the upcoming events!