Sony would have decided long ago if they wanted a second controller to be a main focus or not. They would defiantly want launch games to show it off. Biometrics are cheap and could be ditched/tacked on last minute.
What I'm more interested in is if they will go with a break apart controller and have a vita in a cradle optional controller for second screen gaming. At the same time though, a screen in the controller rules out SR glasses.







