I’ve added a short video to the OP showing the camera effect, because some people were worried the flash was a camera flash.
That sounds like a pretty good suggestion. We’ve talked about social controls of various kinds before, including things like your suggestion, as well as the ability to control who can send you friend requests and etc. Kinda like Discord.
Not on roadmap, but eventually! Please write up your feature request and post it to our Feature Requests board!