couple of changes might help with him over all without breaking the game. all this would stay inline to Legions Trailer. this would make him great in cases without being 2 strong, AND being one of the few killers whos power works in cases.
1) Make his FF window Vault his default window vault.
2) make his FF pallet break addon default. (meaning u dont need the addon JUST need to be in FF)
3) leave his FF cool down the same as to not break the game.
4) rework some of the addons.
NOW before people start saying how broken this sounds billy alone could do number 2 without really a cooldown. this will give more power to Legion without breaking the game.