Alright I slapped together a small guide for power leveling based on info here. I'm not an expert on this so if anyone wants to contribute feel free to update the page or reply in this thread and I can add the changes.
What about getting power leveled by someone who is 80+? Based on the experience sharing explanation it sounds like the high level character would take the largest cut of the share, right?
Also people seem to be into bringing their maxed out Chant Sorceresses to games. Since the buff can be cast on any level character, players get insane amounts of +fire damage to their attacks. Doesn't matter if you're a caster, better to swing that being the case.