The downside of fist of havoc: the striker is in the center of it. To get a kill one must literally be in the middle of enemies. Hence the short activation time. It's not like nova bomb or golden gun where you lob an orb of doom at range, or have 3 pinpoint shots with exceptional range. Those specials can afford an activation time. But what about death from above or shockwave? Well, death from above requires the titan to be a good bit in the air before activating, so there is your "charge time". Shockwave deals damage at range, but only directly in front. The rest of the super remains the same. And there is an activation time. While standing or sprinting, the titan first leaps before smashing the ground. I understand this window is small, but if it is used as a panic on a single target, the super wasn't used to its fullest potential. It was wasted on a single target. While in the air, the titan just sorta falls aggressively, unless using death from above. There are windows to shut this super down, but it is meant to be difficult. No one-shot super should be easily shut down mid use. If a super is being used, it should be able to trump your neutral game. Not always the other way around.