Idk how to best phrase it but while the game is in 2min meta mode, it's never gonna get better. As hard as it is to swallow, as long as "any comp can clear" without any real synergies between jobs, they can only ever be different flavours of the same thing. Buffs are only allowed to make one job as strong as the strongest job can be without them in this setting after all, or the entire thing crumbles.

You make bards stronger support again, that deletes mch. You make mch the strongest because they don't have support, that deleted brd and DNC.

Its been a problem since I started playing (end-hw) and the changes to delete meta parties in shb never made it better, only different.

There will always be a "single best party" composition, there's no getting around that. Luckily most people don't care, and the way it would be right now would be mostly fine if it weren't for some weird arbitrary damage differences within roles (caster raise is flavor mostly; the damage difference is self-contradictory)

If parties accept me as a summoner, they'll accept you as a black mage. Unless you're trying to go for WF, but by that point you should be ready to job swap at any point anyway.