Why though? PCT is below SAM and VPR for aDPS. Selfish jobs don’t have to be at the top of every category. It’s literally the reason we use other metrics to determine job balance.
And to your second point, there’s no reason double caster shouldn’t or can’t be a thing. PCT has similar utility to jobs like RPR and MNK. There’s no reason it shouldn’t be dealing as much damage as those jobs. Truthfully, melees have more mobility than casters in most fights. Maybe we should consider giving them some kind of mobility tax. It wouldn’t be as harsh as the tax for physical range of course, but the developers seem pretty set on keeping these huge bosses that take up most of the arena.