Ironically, this feature is one that is holding me back. I want the Vita to be the ultimate PS1 handheld, which means full analogue support (PSP doesn't, you can simulate the d-pad with the nub, but it won't be analogue), and the more easily accessable L2/R2 buttons sounds perfect (using the back touch panel).|
The PS1 has so many great games, that I would buy a handheld version in a flash. Vita is probably going to be the closest we'll ever get, with the combination of physical buttons and touch screen/panels. I'm afraid that the next generation of handhelds will be mostly touch based.