Suicide was before my time watching TNA (or watching wrestling at all for that matter), but from what I can gather from Youtube and Wiki he was a pretty popular character who was over with the crowd and worked well as a part of TNA, didn't matter who was behind the mask. With Impact on the road and building new stars one could argue that bringing in a masked character working a high flying style would work very well. He could sell merch, masks and such and kids would be drawn to the semi superhero character.
It would also be a good way to get a new high flyer into the company. It doesn't need to be Kazarian or Daniels behind the mask but an entirely new guy.
I would bring him back actually. Maybe redesign his look, keep the mask but drop the one piece.
Would you bring back Suicide?
How would you book him?