I was wondering... what if PUP had access to a trait or equipment effect like [Tactical Maneuvers]?
Similar to Military Parade on BRD relic armor, this grants +x TP when using a maneuver while engaged where x is on-par to the stat bonus given by maneuvers.
I think it would somewhat offset the loss of TP gain from NOT using maneuvers, but not to the extent that it becomes overpowered and replaces melee. (And if it is, it could be tweaked by reducing the TP returned.)
It could also be affected by the different animators, so that Deluxe Animator gives more TP then Turbo Animator.