Why buy a new console to play old games? Why not buy a cheaper old console? This is tying in to the BC discussion, but for Nintendo I think it's even more prevalent. They have had BC as an important feature for generations. I'd love to see the stats on that. Is everyone buying a NES 7 really going to spending their time playing Wii and GC games? Also, the market for Nintendo's back catalogue is dwindling as are their current customers. Surely it'd make more sense to have a clean break and offer hardware that's much more appealing to a wider audience than cater to the ever-shrinking existing Nintendo fanbase?Benefits for end-users would be huge, plenty of back catalog to play with if games dry up at any period, a lot of different kind of games... Huge benefit.
Also, you can't provide BC without a Wiimote and a Wuublet. If the gamer is to provide these themselves, they'll already have the old systems. These old systems aren't big so it's not a huge thing to keep them over. And as discussed in the BC thread, there's always the option of a BC addon to utilise parts of the console to keep prices at a minimum for those who want BC without increasing the base price with an unwanted feature for those who don't. Or just a WiiU Slim download only unit that nicely fits under/on the NES 7 console.