1. I definitely see short battery life and long charge time as a problem (if true). Not sure how much that will affect sales though. If PSP2 can manage a significantly longer battery life then that could be a huge plus and something to advertise in commercials.
2. I know nothing about screen durability, but I do know I don't want a flimsy-ass screen.
3. The design/look will be very important in my decision which (if either) to buy so hopefully PSP2 gets it right because the PSP had mediocre controls at best.
4. Price will obviously be the biggest factor. I think for PSP2 to win (or stand a chance) next gen it will have to be at least $50 cheaper or worst case scenario equally priced to the 3DS. I think $250 is the perfect price for the PSP2, $300 is pushing it, and >$300 will make the PSP2 fail miserably. I bet the 3DS will be $300 and sell just fine. I wouldn't even be shocked if it was $349 for the first few months (for the extra profit) and then quickly dropped to $300. I think that would be a clever move by Nintendo.
Anyways I think the only way PSP2 can win next gen is to be $50 cheaper than the 3DS and of course have good games to support the system (and good battery life will be a good selling point too). 3DS has massive amounts of hype going for it so it will have to be a massive disappointment (in terms of price/quality) in order to actually fail.
