Phantasy Star Universe and Monster Hunter say hi.
I've never played Monster Hunter, but I guess PSU is about right. PSU actually had a pretty well-balanced class system, the thing that sucks is the art style of the game. I guess an action RPG just plain wouldn't work in an MMO setting though, would have to make people go into fields in parties. Though, I guess some could argue that's what a lot of MMOs already do with an instance system.