-It would be nice to be able to drag and drop things on to it or move slots via drag and drop.
-Skills that can only be used conditionally (like haymaker and phalanx) should be grayed out when you can't use them.
-More info on skills in general would be nice so I have a better idea what to put on the AB and what not (how long something lasts, how much damage/healing does it do, etc).
-I'd like something like the AB for a crafting interface instead of what we have now