I too would like a docking/charging station but with speakers.
A couple of other features that I miss from my iPad and would like to see on the Surface include the "reader" function on web pages and one-touch return to the top of the web page. I used both those features all the time.
I wouldn't mind a docking system for it. But then again for the surface as a brand, I wouldn't mind seeing a "surface" smart phone, with the same casing and look. I'd swap my iPhone any day for that, I hate my iPhone and wish I kept my Windows Phone.