[quote]A major contributor, especially in crossover RPGs, is when powerlevels are compared. Essentially "my dad can beat up your dad"[/quote]

I always fixed that by immediately creating un-achievable bars. I have a chat-based roleplay that still go on in a universe of a roleplay I started years ago that has became so extended I might as well forfeit ownership of it. It all started, and maintained itself, because of three "S-tier" individuals, and I just plain never allowed RPC's to be S-tier. Basically, make someone have the biggest dick, and anyone that's there to stroke their own is just gonna skip the roleplay. Although it throttles activity at first, it successfully secures health. The strongest character, if I recall, boasted teleporting up to 9 times in one second and controlling electricity to such a degree he could finitely override your central nervous system to control your own body while also being able to conjure plasmatic jetstreams a few meters in diameter to disintegrate anything they touched. He was broken, he was meant to be, and because he was no one tried to push the benchmark.