@Ben,
True the hunter does have invisibility but his is for when he is stationary and against a wall. I can definitely see how it overlaps the uniqueness, but I think the ability to not be seen is a big one when it comes to helping instill fear. Since often the fear of the unknown can be greater than if you were to actually know what is after you. Your mind playing tricks etc...
What I am trying to say I suppose is that while invisibility is unique to the hunter currently I think if the flavor of the invisibility is unique then I think this mitigates the overlap to a great extent. And as a result it allows you to fully utilize the myriad of ways you can use invisibility to instill terror and chaos without overpowering a single infected.
Hopefully that made some amount of sense.
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| To Each Man, Responsibility |
