The problem with changinng Hyoton to something less niche than a crowd control option is that despite being a niche action, it's a single niche action on the job that has the single most versatile kit in the game, attached to a system that already does pretty much everything. They can't change it into another Raid Buff unless they want to substantially Nerf Ninja's overall DPS because it's already got the single most perfect Raid Buff in the game in Trick Attack. They could change it to a Solo DoT, but as others have already said at that point its either a buff to Ninja's DPS when it doesn't need it or adding additional complexity to the job for the sake of complexity.