We can have a 4th healer and have balance between all of them.

[Ulelu]

To me, its not about balance, it's more about the fact that they attempted to achieve balance by gutting all the healers of what made them fun and unique. I don't want a 4th healer, not for balance's sake, but because they can't make the 3 we have fun and unique. Why would I want a 4th WHM with a small gimmick that barely distinguishes itself from the other 3?

Mirroring what Billy has said in bold, and also mirroring what OP has said in regards to seeing people time and time again stating they don't want a new healer until the other three are balanced - I also see time and time again people that want a fourth healer, but for what? This again leads into what Billy has said in terms of it being another WHM, one filler spell, one dot etc etc and then a neat little gimmick.

Healers as a whole need to be made fun whilst being balanced, which in itself is a balance that the devs can't seem the achieve, I don't want another fun and unique job to be compromised just as AST and SCH have this expansion simply for the brief period of ecstasy that a fourth healer would bring.