and I haven't seen it discussed here.
The rules call for the ability for one player to have a helmet headset. I am not sure how the refs will know who has it and if only one person has it. For example, on defense, players don't play every snap of the game so how to they get a player who has a headset onto the field and get it turned on when the primary headset player is not in the game? Offense is much easier, the QB has the headset. Unless both Allar and Pribula are on the field at the same time. How does anyone know one helmet set is on and the other is off?
Secondly, it only helps when you are huddling. Somehow, you can tell the QB what to do but he has to communicate that to the rest of the team. So in the end, signals will have to be given. And if you give signals, it opens the door to sign stealing. This is, of course, the reason why the NCAA has introduced these headsets.