I'm just worried about uber-characters running around. Granted, the reaction is coming from other online games (like Neverwinter Nights) where player killers with maximum everything are running around. Maybe the experience would be different here.

If there were well defined guidelines and level caps involved, I would think about it again. But then, I'm also worried about the number of new Lvl 1 characters decreasing drastically. I'm personally happy about my character's growing history.

Maybe one adventure, or maybe one city, can be tried with a limited number of higher level characters, just to see.

I'm skeptical, but open-minded.