There are like 26 or 28 buttons on the controller. 15-16 on the right and 11-12 on the left. That's plenty. I am not sure if the "trackpads" have a button in the middle of them.
Fair enough. I suppose I was thinking of left hand as keyboard replacement and right hand mouse, but there's no reason your right hand can't also toggle map, scope etc.
Is the right trackpad going to be like a mouse trackpad in that you have to continuously swipe over to turn in game, or like an analog stick in that you just keep your finger on one side and the character will keep spinning? Or will there be an option to flip between the two for different games?