[2019] How to fix retribution for reals

Against my better judgement, let me join the chorus of those who offer suggestions about fixes. Frankly, the best thing would be to just remove the ability. Anakin would still be OP, but not broken OP. But since that won't happen, why not make it something that exhausts him so much that all of his skills and stamina are immediately put on cooldown/depleted. This way, while it is by far the most powerful ability in the game, at least it would require some sort of risk/reward calculation instead of no risk/best reward. He'd be significantly vulnerable for a few seconds after its use. It also makes sense thematically since such a feat would exhaust him.

Edit: Based on Fulcrum and my chat below, also would make sense to add a decrease in the meter if not used, like Yoda's charged push but slower.