Believe it or not, it doesn't sound appealing to me, at all. I don't want to play old GC games I've already played. I don't want hardware that's going to be limited by the past. I want a new Game Boy that can do everything my PSP can do and more, plus play games made by Nintendo (if they still have anything decent left, the hits have sure been wearing thin the past couple years). It should have not one, but two analog sticks. It should have as many buttons as PSP, only pressure sensitive as well. It should play music, movies and so on, and it should have a better media format than UMD. And it should have the one or two features of the DS that are actually worth something (touch screen and mic port). If it's got all that, and THEN it can play GC games too, then great. Otherwise, I'd rather they forget about the past and start thinking about the future for a change.
Also, Nintendo CAN'T do their own business better than you, or me, or anyone else with half a shred of intelligence. That's why their market share keeps getting cut by half each generation and their image keeps sinking lower and lower. THEY HAVE NO IDEA WHAT THEY'RE DOING, and that's the problem. Once they realize this and start taking the necessary steps to dig themselves out of the enormous hole they've put themselves in, then maybe they'll have a chance of competing against Sony. But only then.