Let's face it: some people are really really good at fighting. When you take someone down with intent on capturing them, you have one of two choices: tie them up right away, risking your target letting out a few peeps, or take off their headpiece and risk getting rekt.
I suggest Rags for Gags 2016. Use those useless rags lying around as a gag, similar to how the muzzle and ball gag works. It would be a cheap, easy way to mute people. If muting people is OP, replace all text spoken with "Greytide mumbles."
This would help close the skill gap between players and put more advantages in the lap of the antag.