A few things bother me about TP.

Firstly, melee can run out of TP and can only restore it with Invigorate or a Bard. Compared to casters, THM and ACN have ways to refill MP, but PGL can't sustain itself without another class skill. Even then, it's more prone to run dry than a THM.

Sprint uses all TP. You'd think melee need more mobility than ranged, but it's melee who get drained by it.

But mainly, TP isn't the main restriction to much aside from AoEs. Even if you had infinite TP, you'd never spam one attack (except maybe LNC AoE). The combo/form system, (de)buff durations, CDs, etc. already give you a varied rotation; there's no one best skill to spam.

I feel that all TP does (regarding PGL and LNC) is limit the use of AoE and Sprint. If you don't use those, your single-target dps can last forever, iff you have LNC22, and you may as well not have a resource.

If I imagine a world where PGLs and LNCs have 0 TP costs, I actually can't see major drawbacks...

Thoughts?