Ability to pre-create Rendezvous participant regions
It would be nice to be able to create rendezvous regions ahead of time with names that will be reused in all places a certain participant will be shown (e.g. Participant 1, Host, Presentation). Then, when participants join, they could be assigned to those regions (e.g., the host can be selected to show up on any region named Host). Key to this would be maintaining the region size and not rescaling.