I'd lol about people says sony could come easily with a 3D glassless screen that had multi touch capacity... Because, first sony try to bash the 3DS saying that the 3D glassless screen they prototype on their laboratories don't have good quality (so by extend they wanted to say the one on 3DS should be the same) and second, Nintendo try 3D touch screen but haven't implement it because the fact to put your hand on the 3D screen make the 3D perception on the screen disappear.
For the PSP2 has multimedia machine, it will be more harsh because they will now to fight against the ipod touch, iphone and ipad that got all the multimedia features, the hype plus some small games that are designed to be played on the go.
Last for the power, every other company on the hand-held market try to compete with Nintendo with the power (Atari, Sega, sony) each time they get beat because this have a big downhill, the battery autonomy. Every Nintendo hand-held has battery life of 10 hours or more. That's important for a device that you will likely play everywhere and on the go, not close to a plug (as my Game Gear :p).
But we must first concentrate ourselves on the way to entertain people, for video games to live. Else, it's a world where sales representative will win, which has as effect to kill creativity. I want to say to the creators all around the world:"Courage, Dare!". Shigeru Miyamoto.