A pain surely felt by other transmog enthusiasts is that, when you’re reviewing items in the “Dressing Room” window (which is how you save future appearances), there’s no way to actually REMOVE items.
Considering there is a snazzy little “Appearance List” button in the top-right corner of the window, it would be a perfect way to allow players to Hide certain slots, or simply Remove items from them (effectively remaining as whatever the default appearance is of any item that is equipped).
The reason is that it becomes a MAJOR hassle when you’re trying to organize your transmog appearances, when suddenly “ah crap, there’s a tabard or shirt that’s showing, I have to delete the set and create a new one”.
Little annoyances like that could be easily avoided by maybe something at simple as clicking items on the Appearance List within the Dressing Room window, giving us the option to “Remove” an item or “Hide” that particular slot.
Oh, and one more minor suggestion; let us change the icon associated with our saved Outfits, and also reorganize them to our liking. Kind of annoying to just have everything organized in such a mess. You can save something like 20 outfits per character, so just being able to click and drag them into different order would be nice.