Stormblood was another thing, job had different tools, some had less mobility, brd was clearly too strong (which i will come back to it later), etc. O12s FO was badly designed too, but you seem to forget how, during 4.4, mch was so bad some were apologizing and thanking their group for letting them do the prog as one,
a sam actually bringing more in a meta comp than them. And during SB, there were double range, triple melees, etc used to speedrun. About panto, that strat was actually a -cheese- strat, the ranged or caster were supposed to do it. And speaking of ultimate, I cleared all three of them: Ucob liquid fire bait could be done by a healer or a caster, they were the one taking the range spot if they had to do the neurolink anyway, melee had to leave the melee too for those anyway. UwU eruptions were anyway done with ranged + caster or healers. TEA had literally nothing to bait outside of a tornado and one super jump which basically bring the boss to you, so even a melee could technically do it and only barely lose 2 GCDs at max.