well I was thinking more the hardware specs etc but anyway.
for the DS2 I think the Nvidia Tegra is basically a given at this point that should allow graphics up to the level of the original Xbox. I would hope for about 4-8GB of internal memory + expandable via SD card and offer downloadable GB/GBC, GBA and NDS games. For the screens two about the size of the PSP Go screen and maintain the clamshell design, also increase the accuracy of the touch screens but I don't expect them to go for a multi-touch interface. the games should be on flash carts similar to the DS ones but with faster transfer speeds and capacities up to 4GB.
the PSP2 should be about twice the power of the PSP and move to flash cart based games + 16-32GB internal memory with a heavy focus on downloadable games but keep physical games so as not to alienate users that like to have a physical copy and retailers. as for the screens yes screens I think they should have a multi-touch screen that slides up in the fashion of the PSP Go to reveal a traditional touch screen (stylus based) of the same size this will allow for more multi platform between Iphone & DS2 hopefully meaning they get a lot more games than th PSP did early in it's life.
thats all I can think of for handhelds I should post home consoles later.
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