The one big thing I don't like about that idea is lack of diversification for streams of revenue. The reason why Sony could stomach the losses from the PS3, or Microsoft could buy their way into the video game market is because they are big companies specializing in a lot of things and different sources of income.
Right now, without the 3ds going so well, nintendo's losses would have been catastrophic, but while the Wii U is doing well, overall the company is in very good shape.
This is also another reason I think they should go into mobile making mini-games and making their virtual console available while putting out a controller that attaches to an andoid or apple iphone. It's another source of revenue, even if their console market is going well, then they are still bringing in money from that, sales from old consoles, software, handheld, among other things.
What if the hybrid flops...You've now got the fate of the entire company into that one product.