An interesting discussion, and I think a useful one. Thanks, Zanzibar.
I have a different perspective than some, I think: This is the only MMORPG I've played, though I play a lot of other kinds of games. From my perspective, grinding is just silly. It's not fun, so therefore it has no place in a game of any sort. It seems to me that planeshift wants to have a roleplaying focus. Levels make a certain amount of sense as game mechanics, but I don't think they need to be in conflict with this. So.... What I'd like to see is this:
Multi-person quests that provide experience in various skills and stats, and also PP. Right now the PP you get from most quests is the equivalent of killing a single mob. The mechanics appear to be in place to allow advanced quests that would provide experience points that make sense for high-level characters. That would allow a way to advance your character through role-playing rather than grinding.
Taking that further, the next thing would be multi-player quests. Quests that required you to interact somehow with multiple other players in order to complete them. That would require new mechanics to be supported, but it would mean that role-playing becomes built into the game and integrated with levelling, in a sense. Ipso-factso: a game with an even greater role-playing focus, less grinding, less conflict between role-playing and power-levelling: more fun.
Perhaps this has all been thought of, of course. The quests have improved dramatically over the two years or so I've been playing, and the faction system is presumably going to assist. I'm hoping this is where they are going, and I really look forward to seeing it.