IIIIITHE1IIIII on 30 May 2012
"Would you want a touchscreen on the PS4 controller?"
Yes. That would allow Sony to catch up with Nintendo after a one-year headstart. Nintendo need that competition in order to keep improving. Not following their lead would be a foolish and risky move on their part.
Seriously though, I wouldn't find it necessary at all. The Vita should be sufficient.
