What a fantastic trailer and it really does a whole lot to clear up confusion about what the system is and how it works, which, given the more modular nature compared to other systems, would certainly help. I really like it though, and hopefully it'll mean unifying developers on 1 platform rather than splitting them between (as is the case now) the 3DS and the Wii U. And also the list of launch partners is awesome, for sure - definitely wasn't expecting that. Still wonder about the battery life, and the price, but I'm really hoping it'll do really really well.
And the portability angle too - playing this without a TV sounds like it won't be difficult at all which is fantastic! Yeah, really hyped for this, and can't wait for March.