I would LIKE there to be change and for people to play a wide variety of classes. I'm just a pessimist who understands the reasons why people don't. Adding a hybrid class would most likely wind up with a class that nobody invites to parties. You said it yourself, we're "stuck with just Whm heal, War tank, Blm DD and everything else being considered inefficient because there are lacking pieces of the puzzle".

If we just drop a hybrid into the game as it is... or hell, just another healer period, it'll wind up a class that sees little use, if any. Hence why I said that FFXIV doesn't need a healer, or at least it doesn't right now.