So, I've not seen any functionality in game pertaining to vanity slots. There's a costume slot, but iirc that's limited to town use and quest specific costumes rather than a permanent cosmetic function.

Is there one in game that I've missed? Would you like to see this?

Hardly any responses, people not really bothered about this?

I'd be happy if they just added more costumes for the disguise slot so you can use those for non combat situations. In battle, armor is fine by me.

If the disguise slot can be used anywhere I'd go for that.

I'm all for it similar to WoW and Rift and as long as they give us freedom to mix and match like cloth and plate .