If anything they need to roll way back on the combo’s they already have. Only NE and Tauren should be Druids, and that is only because of the need for faction parity. Otherwise it would just be NE’s. Same deal for Human Paladins and Orc Shaman, just for faction parity BE Paladins and Dreanei Shaman. None of the silly combo’s that make no sense either like Tauren Rogues and NE Warlocks.
This homogenization of everything really ruins any chance to have unique race and class lore.