With the release of the Varsity Flatcap I have found myself needing an option to toggle the hat, but not the glasses.
Let me explain: The hide hat/show hat button, should hide and show the hat part of the outfit, while the glasses ('visor') part should remain, and be separately toggleable with the visor option. I kind of wished this was a thing before this too, for the far eastern schoolboy hat, some of the nier hats like the type 55 maiming and the orbonne casting hat. Loads of cool hats with cool facepieces tied to them, but sometimes it would be nice to have one or the other for the part of the outfit. I guess it would be added workload, but a man can dream.... I can't be the only one who wishes this exists.