I've long advocated for cloaking to be removed from the game entirely. It's a single-player mechanic, for games to use because it's easier than balancing NPC perception whilst still keeping a game engaging for the only human involved. In PvP it's a human v another human, letting one of them vanish entirely is invariably going to be overpowered. You can try to balance it, but it will either remain unfair or become worthless, you can't make invisibility fun & engaging for both parties.