I keep waiting for a phone vendor to really look at keyboards/touchpads/whatever on their phone and come up with a solid offering that does more than just copy Blackberry's approach.
Give me a slide-out keyboard, but don't stop there. Put a laptop-style trackpad on it or a trackball next to the keyboard in a way that emphasizes two-handed operation (like a gamepad). Put shoulder-buttons for shift and ctrl and the mouse-buttons - look at PSPs and gamepads for inspiration. Stick a scroll-wheel on the right shoulder. Our phones are getting huge but hardware keyboards are still thinking like Blackberry, and thinking like Blackberry obviously didn't work for blackberry.
Then focus on productivity. Port eclipse to the damned thing. Port your full development chain to the damned thing. Port some PC games - a trackball isn't a mouse, but it beats the heck out of a touchscreen for PC gaming.
Give us a phone that feels like a hand-held computer. Sure, it's thick as a brick and weighs more than a tablet, but it's a computer you can use comfortably without a desk.