I'm not sure what the solution is but the current way makes armour stands clunky and annoying. I can't just disrobe and then grab another set, I have to faff about moving all my clothes to quickslots, hang them up on a stand, pop another armour stand for items, move all my new clothes into place and my weapons back to quickslots, then equip all my clothes one by one...
I don't even care about extra slots - I carry a lot of crap and get by with 9 free slots - just make a less painful way to manage clothes.