With so many schools under lockdown, kids staying at home. I think one application would be a virtual school. Right now when teachers teach over google classroom, the kids have their cameras and mikes turned off. And basically there is almost no interaction, and feedback as the teacher teaches. Kids don't like showing their living room environment. Also, the social interaction between kids in a school is basically non existent now.
There's probably a real need for a virtualized environment of a school, or even a church if the lockdowns continue. And background replacement for video calls, in general.