I think there should be a rampage effect that gives the player a few potion effects for a few seconds. This could obviously have a long-ish cool-down and only be available once a certain rung is reached

Lets say there was a rage player that activated the rampage. They could get speed, jump boost and a higher level of strength for a few seconds. Then they would have to wait a few minutes to use it again. I think this would make the game much more fun in the late stages.