How about providing a track pad for the next edition? ...Perhaps bury it in the bottom bevel? If not similar to that found on the Torch 9810, could it be inserted in the bevel in a similar manner to the main touch screen?
It would sure help in radically reducing the fingerprints on the main screen as well as helping with "thick-finger" problems where you can't quite hit the precise spot on the touch screen to cause a desired action.
Larry