I vote to change the rivals list back to its previous version. I agree with what everyone else is saying. I have not been effected by the change yet, as I am a level 50, but I was planning on buying several crates to greatly increase my stats in order to become the strongest within my level. With this change I will not buy the crates and might just quit the game upon reaching the new whale level, which is shortly approaching me.
However, if it reverts back and I will buy several vaults of gold for the crates, the Boss Events, box events, and WD battles.