Problem is how much of the content will have this "Quantum" difficulty and how accessible it will be, plusit should drop decent loot or people are going to lose interest in it really fast, i mean who would want to do something that increases in difficulty without a decent reward?
And i'm not talking about cosmetic i'm talking about actual gear that you can use beacuse gearing in ff14 is terribly slow compared to other games, it's saving point is that you have everything on one character and that's it.