Originally Posted by
Shurrikhan
No. If you build around a particular rate of consumption (which is GCD scaled anyways, in this case), then that rate of consumption does not force you to go negative. You can weave in more burst skills than you typically would, such that, much as the case with enmity, you end the fight with minimum excess TP if the value of those higher-TP-cost skills over the normal rotation is greater than the value of the %TP potency modifier, or likely just anywhere just short of or barely dipping into the penalized range if not, unless the fight's situations give cause to burst further.
You can, of course, build short of that particular rate of consumption, as to oblige the use of Support skills after X minutes, but that's an externality. All a ubiquitously-tied resource system fundamentally does is allow you to trade long-term gains that are greater on paper for short-term gains that may be greater, or at least vital/necessary, in certain contexts.