Was considering getting a microphone for the head red so that he could do penalties, coin flip, etc on the loud speaker. Is there a rule that prohibits this. Also, if I get it, will you use it?
No rule that I know of that would prevent it... many stadiums have the Referee with a mic these days. As far as wearing it, they should, but some are scared of the mic, some would welcome it... I would guess you would be about 50/50.