The whole mirror fatique thing is really interesting. I get enormous social anxiety on virtual calls and am constantly checking my mirror. I hate teams for that reason, i can't properly see what I am transmitting while Google meet is showing me Exactly what I'm sending in HD. I think I'll have to experiment with removing that and see if it reduces my anxiety
I feel like a halfway is needed. Maybe a virtual silhouette that shows my err blocking within the shot, while obscuring more detailed mirroring. Wonder if that would help.