Oh! A good addon to this plugin anyway!
Then you can change the name in: The big Mouth! XD
Anyway there is already a plugin: "character select menu" which has already a similar function.
In fact, you can change you character (as survivor) and select any special infected.
And you can also use the special attack of that special infected. (in the equip menu in the right, a new "white box" appear above the "primary weapon box" and when selected, you enter in the "civil mode", and can use the special attack of that infected (also the tipical cooldown ring appear). You can scroll with the mouse wheel the weapons, and change from humans weapons to infected weapons!
Obviously this feature should work mainly for infected!
Maybe you could look in his code (couldn't remember the author name, anyway
Anyway, as said! Very funny plugin!