I'd say I'm against the classes' names being changed. They have individual concepts, many of them important to the game lore - Conjurers are not white mages, for instance, they're basically Gridania's elemental priests and have magic that reflects as much.
In the end I guess I'm not massively, massively bothered but, yes, I'd much prefer the classic Final Fantasy classes be implemented uniquely down the line at some point.. or not at all.