Tag search on your own profile already exists! In the recode it was hidden to give us more uniform galleries, but if you click on the "Show" button in your gallery next to the "Tags", and then click "View all" you get all tags! Many people use those for tag directories to more easily sort their characters until subfolders are fixed.
This would be a really nice feature. I want my characters to have more than one folder option and to be able to search my own characters from my profile would be really nice
thank you, ElithianFox I didn't even think about trying that. Also that master post is a really good idea!