PLD does need adjustments to its TP management, and I would love to see the job get a TP management skill, especially for longer fights. But at the moment, TP is the only meaningful resource on PLD. It doesn't matter if you're managing TP, MP, or stacks, as long as your dps moves are actually tied to a resource that you're forced to manage. If that isn't the case, you remove meaningful decision making from the job.

Also, if you're using:
1) Flash spam (i.e. spamming a 0 dps enmity move)
2) in Sword Oath (i.e. reducing your enmity generation on the abovementioned 0 dps enmity move while you spam it) and
3) get locked out of Shield Oath as a result (i.e. not planning your stance swaps on a scripted encounter)

then I suspect that no amount of job redesign will be of assistance, unfortunately.