I don't know what can honestly be done for Final Fantasy XIV at this point.

[Jojoya]

The game has been shoved into a balance hole. Where fun goes to die. I'd much rather have classes be fun over them being tightly balanced and I say that as a raider.

I agree with the first statement since it's pretty much where classes/jobs in all MMORPGs end up.

The problem comes from the last.

How many players would end up happy that their class/job is fun to play if it also meant they were being excluded from content because it performed poorly compared to the rest?

Very few would if they play content where performance matters. Thus the balance hole gets dug.