Priority Speaking: Automatically mute all mics for 2 seconds when someone stalks talking
A very quick solution for cross talk - which is one of the major complaints for all VC, is to have all mics mute temporarily (approx. 2 seconds) when someone starts talking.
This would not be too difficult to implement for trial and I think it would significantly reduce cross talk.
A soft beep would also help people know that someone else has priority talking.
The option (or only way, depending on how this should work) to disable cutting people off by only letting this feature activate after silence could work also.