I dont think Jini's idea are focused on RP but seemly pure PvP. Just guessing but as for the switch and set job classes. thats not unheard of... most RPGs work that way and this is a RPG.
But nothing wrong with a lil PvP... if it was a pure PvP game like say Halo, UT etc.. yea i'd say cut the PPU. make one class of monk etc... thats why im thinkin Jini is only thinking on the PvP. Im not sure though