I'm not going to argue that anyone should be enjoying frontline, since that is ultimately subjective.

I do think that melees are not far from being in a good place in general. The purify change was probably the biggest nerf and should be adjusted in my opinion. Even with that, I think the majority of melee jobs are currently very playable in casual games and can perform well. DRG, DRK, and PLD are the only 3 that I think had their damage overly nerfed, though they can still provide utility for their team. The other jobs feel reasonably impactful, doubly so if you duo queue with a good healer.