I think a super helpful addition to the beta wardrobe would be a tab that gives you access to the wearable items in your wishlist. When I'm designing a new HA, I'll often use the "All Items on Subeta" option when none of my own items quite work. It'd be super handy for me (and probably many others) to have an "Only Items in Wishlist" filter.
You can already sort owned clothing items into drawers for organization purposes. This would essentially be the same idea, just without having to own the items. The "drawers" in this case would be the categories in your wishlist -- you could choose to see just the items in a specific category, or have them all lumped together.
Having access to your wishlist in the wardrobe would be a much handier way to try out un-owned items. For example, if you have several wigs in your wishlist and want to see how they fit with an HA you're working on, you could just use "Only Items in Wishlist" and then click on the wigs in turn. The way it works now, you'd have to copy-paste each wig's name into the search box one by one -- and to switch between them, you'd either have to have all of them on your HA and switch which ones are visible, or do a lot of repeat copy-pasting.
So basically, in my opinion, having this feature would be very handy and very awesome. What do the rest of you think about it?