I really wish I could just have Android's autocorrect...
I really love my Surface RT, and the onscreen keyboard is fantastic (even though the numbers and symbols screen is hard to get used to), but I would kill to have Android's typing suggestions and autocorrect. Microsoft has a long way to go before it's as good as the keyboard on my Galaxy Nexus.
Having ctrl and arrow keys on a touchscreen keyboard is badass, though.
So to make this more of a discussion, what small features or elements would you cherrypick from other OSes and put on the Surface or Windows 8/RT?