I can only see a virtual event happening if skaters skate live, and their livestream is broadcasted to the judges/ISU channel. For that, they'd have to live in timezones where they're able to compete at the time assigned, and their selection to an event would need to consider that. I do not support a serious competition working with something pre-recorded when we don't know how many attempts a skater made.
Still, I don't see how judges could evaluate precisely, without low-mo and their own cameras.
Agree that it would have to be live. And I think it is possible to do that.
ISU would need a representative at each rink to control the conditions.
I don’t think this would be easy, but it is worth pursuing with a solid plan that takes every possibility of cheating into account.