You're implying that new dps jobs reinvent the wheel when they dont. MCH was a copy of brd just as much as drk was a copy of pld and ast a copy of whm/sch. You assume that RDM will be drastically different than BLM, and that SAM will be drastically different from the other melee dps.
On top of that, just because the 3 jobs for HW were more copies than anything, doesn't mean that ever tank or healer they add would be copies too. The situation is different.
