So everyone is worrying that the Wii U wont be able to do any extra cool stuff as far as multi tasking etc. But let us remember there's a whole gig dedicated to this OS.
Now it's my belief that the OS itself is a maximum of 250MB of RAM with a whole 750MB left over. My reasoning is that Windows 7 on my machine only has 250MB reserved for the OS and that's a far beefier system.
I'm still convinced that 750MB is reserved so more things for the OS including second gamepad usage (remember when the devs were talking about 500mb when second gamepad usage wasn't on the cards?)
I'm almost convinced that there will be some really cool upgrades to the OS further down the line including the ability to browse the web/load Nintendo Tvii/Access (it's streaming video how hard can that be?). Launch eShop and download a game (if the game being played is via optical disc think it'd be harder to do when playing a game off the HDD, but who knows), and access Notifications all on the second gamepad. I honestly think that a sleep mode could be implemented, as even the 3DS has the ability of a sleep mode. We're already seeing leaps in Miiverse, so my outlook for the Nintendo OS is really bright, and one day Nintendo may even launch its own cloud servers for backup, or even one day cloud gaming (which I hate but it seems to be going that way by 2020), I even adding eye-tracking software and hardware peripherals in the future would be amazing, and I'm sure fully possible with 1GB of RAM and some R&D
How much RAM do you think the OS actually takes up? how much RAM do you think is left over? What cool features do you want to see apart from Achievements and Crosschat (because that's a no brainer, why else would you put a damn microphone and a chat app on there if cross chat couldn't be run as standard from there?!)