Should Clemency be nerfed?

[Nedkel]

Who on earth even uses clemency when playing competitively? xD

And why should we even consider balancing the game on casual level?

When i see paladin wasting his combo for clemency as a healer, i want to grab them and throw them into oblivion. I would appreciate the change however, clemency as a oGCD with 2.5 sec cooldown and MP cost, would be a nice thing to have.