I am looking for/suggesting a cloak type of add-on. This would allow an admin to be able to cloak himself (become completely invisible) with a key-bind. For example: you hit "ctrl c" and you become invisible, then you hit it again and you become visible. And when cloaked your name is also not visible from any distance. And if possible, it tells you in centerprint (like macro) when you become invisible and visible. I don't think anyone has created anything like this with a key-bind, but I will keep looking.
I am aware of the AdminX add-on which includes a cloak feature which allows you to become invisible, but you have to ctrl k to become visible again and you have to type "/cloak" or something. I need one that works with a key-bind.
I think this add-on should be quite easy to make and it would be useful in multiple ways for others.