It more or less eliminates it. The only major consideration for holding stacks is IB. If you get the mitigation for free on change there's no reason to 'manage', you'd just spend it as you get it (small exception for triples).
While I don't think we will agree on this being good/bad, I think we can both agree that the occasional saved dps isn't worth all the dmg this would do to the WAR playstyle:can be annoying to stance-dance at times on the other two tanks, since they avoid their enmity combo. If you have zerked, BBing WAR while you're in SwO or Gritless, it can be a pain.
* base rotation becomes stale, mostly 123 esp for OT
* no more maim considerations when spending stacks or using fracture
* raid utility would require next to no preplamning / anticipation
Many of the interesting mechanics WAR has just die or become very stale and uninteresting.
Ideally just spreading the potency over say 5 ticks/15 seconds or something similar. Maybe with a slightly increased potency if it takes HoT form.I'll give you the Clemency thing. Maybe a 600 potency heal with a 50 potency HoT over 30s? Although honestly the MP cost and the fact that its a lower potency than Equilibrium (with the changes), combined with the fact that none of PLD's CDs buff it like Berserk can, I feel makes it pretty balanced.
Clemency can't be properly balanced with a sole focus on the tanking role as it impacts healers as well.
Since healing in this game is more timing based than HPS based, a HoT would likely be the least intrusive instant heal option, while still providing PLDs a skill they can conveniently use.