Power hour is nice, at least for my style of playing (idling mostly) so, here
is and idea, to keep it in game.
Add factors of exp gained and nurmber of mobs killed to powerhour. Do 500k
exp, and powerhour gone, and kill hundred mobs, and powerhour gone, or time is
up powerhour is gone, which ever happens first. Would these help, or make
things worse, somebody else have to decide.