Some real-life reasons why “yes.” better to be able to announce the nature of the foul, i.e., late hit, taunting, etc.
I could list a dozen more. But I’ll stop there.
The cost of a simple but good referee’s field mic system is less than $4,000. That is a very small investment that will yield great returns.
Considering the "nature" of those complaining about anything/everything, it's still pretty lopsided that these complaints ONLY happen when they negatively affect "THEIR" team. As for better communication with the fans, sometimes yes, depending on the relevance of the detail, but most often most often it's not going to matter.
1. For timing adjustments, direct communication between Referee & Clock operator might help, but a simple signal for "Clock Adjustment" ( then everyone interested could simply watch the clock and see what happens, should suffice.
2. Disqualification signals when necessary after Signals 38 (or 27) when followed by a clear Signal 47, should send a clear signal of what is happening to anyone paying attention. Either a verbal, or hand gesture signal to the respective Head Coach would be helpful.
3. When a loss of a helmet causes a player to be removed, the result seems somewhat obvious.
4. For False Start &/or Illegal formation, Signal 19 seems adequate for spectators, an additional verbal clarification to the HC may be of value.
5. For UNS & UNR fouls the current signal seems adequate.
It's helpful if the game "announcer" is aware of each signal, to inform the spectators, but as we all know (at the NFHS level) that can often present additional confusion.