I won't go into why I personally am suggesting it.
I think this is something a lot of people could use if they are uncomfortable around more typically masculine or feminine looking characters.
Optionally, if adding somebody to your blacklist hid them, that would work as a possible solution as well. If they did this and increased the blacklist size to be infinite, I think a lot of issues people have with various social aspects of the game would be resolved. (Trolling/Griefing RP, People blocking an NPC, Emotional Safety)
I think adding such a toggle would be good for the game, but I want to know what other people think as well.