|A touchscreen is always useful. I wonder if the USB slot is just for drives or if you can actually use it as a computer interface instead of Ethernet or Wi-Fi. Doubtful, but it would be a good idea.|
According to posts from this forum, the possibilities for the USB port has a lot of potential. There is one guy on there claiming to be able to use the port to feed an external USB DAC. Apparently the OS on the Touch is some form of Linux. This thing is starting to look more and more interesting.