ragnar, you completely missed my point, and I apologize if that was my fault. However, I think you may be so predisposed toward arguing against the d-pad (et al) and that is affecting your interpretation.

Anyway, I mean to say that inclusion of an auxiliary hardware input device can reduce the stress on the touchscreen. Case in point: one of mine is wearing out in a very specific area. That is due mainly to my mode of use. Eventually I expect that region to be less responsive (and I suspect it is already getting there) whereas the remainder of the screen will continue to be useful. Using a hardware solution could balance my usage to the point that wear-and-tear would be more evenly distributed across the touchscreen.

I cannot emphasize the highlighted portion enough. THAT will turn out to be the hallmark of best practice touchscreen UI design.