features I would like:
-faster processor
-3D accelerated UI
-qwerty keyboard
-proper divx Video playback
-better quality touchscreen (it should be more durable)
-better battery life
-wimax support
-even better browser with plugin support for flash 9 and WMV
-X86 processor could be helpfull for support in applications (but probably kills battery life)
-UI with FULL finger optimalisation
-handwriting recognition that works
-better email and RSS client
-Skype and a small MSN client
-an easier API for building apps using python (like the one for S60 )
-a slide cover like the Nokia 770 had

Buy a laptop. Most of the stuff you are asking for is pretty much unrealistic without bumping the price up enough that you might as well just buy a laptop.