I'm glad he's acknowledging the issue. Personally, even though I have and enjoy a Wii U, I wouldn't mind them replacing it in the relative near future with something kick-ass. When X, Kart and Zelda come, I'll have had plenty of good times with the system with Mario 3D and WWHD, not to mention money saved on online fees while playing COD. If a system were to launch in 2015 or 16 it would give me something to consider instead of a PS4, XBOne or new PC... I've already resigned that Wii U won't have many of the games coming to those platforms so another option is inevitible.
By big fear is that rather than going more core and competing with MS and Sony for my dollars, they instead go full casual with some sort of app-focused Nintendo-only product.