Screen Size Without Changing Any Other Major Parts

I think the iPad is great and all but I was really hoping for something more portable and pocketable. I have a 13inch laptop that works just fine for watching movies or web browsing and don't need the large iPad for that. It feels just too large and a bit heavy for how I want to use it. After seeing the teardown photos it looks like there is plenty of room that could have been eliminated with a smaller 7 or 8 inch screen size without changing any of the other major parts. I've read rumors of smaller screens being tested and remember reports by analysts that the iPad had a 7 inch screen. This is a game changing device and perhaps Apple has more than one size of them in it's plans. They could use a smaller screen with the same number of pixels just by changing the pixel size so all regular iPad apps would run just fine..