Just playing around with a Pro at an Apple store today and the first things my thumbs looked for when I put my hands on the keyboard was a trackpad. And the first things my eyes looked for was a mouse pointer on the screen. Using a keyboard without a trackpad just feels so wrong. I get that Apple considers iOS to be a touch interface but I think a decent compromise could be offering a mouse pointer when the iPad is connected to a physical keyboard. And then every physical keyboard should have a trackpad or allow the space bar to be used as one. Take the keyboard off and the pointer goes away. Seems doable?