I'm curious to hear other's thoughts on they think would be useful.
Please don't hold back ideas! There's very little harm positing silly or unlikely ideas, but there is some potential value (perhaps more than you realize).
Inspired in part by calebo's comment here
I think this could be cool, but agree that the people should be pretty good. Perhaps it would work better with 1-3 "ambassadors" who are specifically chosen for being able to do this well, and do it full-time.
I wouldn't be as enthusiastic about random people trying this with lots of important people online, due to the complexity.