What if we had a slot on our armor and helms that was like a vanity slot. If we place any other armor or helm into that slot it shows the look of that equipment in place of what we have but we keep our current armor or helm specs.

It's kind of like a vanity in a sense, but we can utilize the awesome designs of the past expansions.
There are so many awesome armor and helm designs that are wasted because if we want the look we have to have whatever stats come with them. Is this even possible??