What would I like to see next for the Surface? A Laptop Type Cover
Basically, slightly more laptop-ish.
An extra battery would be good, but the top thing? The ability to hinge the surface and use it like a laptop.
After owning my RT for a while. My problem is that when I want to be productive on it, I absolutely need to use it on a desk.
If it's technically possible with the connector, a couple of extra USB ports in it wouldn't go amis either.