I'm hoping to see a varied lineup of skirts when they become a feature. Not just the standard Schoolgirl, Cheerleader, and Maid, but also some business attire and maybe even a couple club-style minis.
Any thoughts on adding stockings with garter belts? Since they're typically worn under panties you wouldn't have to deform anything.
As far as toys go, I still really want to see liquids and oils added. I'd also like to see a ruler implement that makes a mark with a little more shape than the current paddle or hand. A long enough ruler could smack both cheeks at once!