Looks like the same-old same-old.. all the "core" gamers here whining because Nintendo isn't catering to them.
Here's the deal guys, once you remember that the Wii-U console is sending entire screens worth of data to the Wii-U remote it doesn't take a genius to realize that the additional processing power the unit would have to have to support more than one Wii-U remote isn't just something you can lightly toss off. It's a bit more than the "rumble" command your xbox controller has, folks.
So every additional Wii-U remote would mean you'd have to add on about 50% of the processing power to support another entirely additional screen. You want to double, triple, or quadruple the processing power this thing has to have to support multiple Wii-U screens? You're looking at prices around the original PS3 mark, and sorry folks, but that ain't gonna sell to Nintendo's target audience who, incidentally, if you didn't buy the Wii, you'e not. Oh sure, a PS3 priced unit might sell to you, but you're a niche audience, and frankly, you don't matter squat when compared to the millions upon millions of new gamers who are wii users who Nintendo really hopes will upgrade.
I mean, they even telegraph that this is what they want to happen by being very clear about it playing all the old Wii games, and using all the old Wii controllers, including the balance board. Unlike the Wii, this isn't a console designed to bring in either the hardcore audience, or the new audience. It's a console designed to get the current wii audience into the idea of upgrading.
So whining about how it should do more than one controller is really just showing how you don't have a clue about what Nintendo is up to.