The Retina Display on the iPhone 4 is amazing!! I would be great if the iPad could have an increased resolution. I don't think at this point the Retina resolution is achievable on iPad given the size of it screen (I would require a super powerful video card) but at least an improvement of the res.
The iPad is a excellent tool to take when travelling. I would like to have a SD reader integrated in the iPad to be able to transfer my pictures directly without having to use the dongle. Please add it to the iPad2