Add a short cooldown to the traitor invisability cloaker.

[Dr_Bee]

it's worth noting that there are many traitor items that have basically no counter

sleepypen, for example: fill it with the right stuff and your victim has no idea that he's being robusted until he collapses with his brains leaking out his ears

radbow is another one, providing you use it properly, as is the silenced 22. There's no disputing that the cloak is the easiest way to do this, or the most powerful, but there are plenty of traitor items that Joe Assistant has no means of dealing with, countering, or even knowing about until they're already dying. Really anything other than a gun or an e-sword where it's obvious that the guy has it and is attacking you, and that you can just steal from him if you stun him, falls into this category.

sleepypen is balanced by the delayed action most poisons have and the rarity of super-poisons, plus a small in-hand sprite for the paranoid to see.

.22 has an in-hand sprite, a click sound when fired, and somewhat minor damage compared to other firearms. meaning that, again, if you are wary, you can spot a person shooting it and counter-attack.

radbow has an OBVIOUS in-hand sprite, delayed damage, a long recharge time, and a visible projectile. meaning you can easily identify someone using it and then counter-attack.

your comparisons are nowhere near what the invisibility cloak is.