Just for the record I've been saying this for like a year now (Fusion platform, shared games, cartridge based + eShop, multiple hardware configs), so has zorg1000.
It's just the more I examine the situation the more it becomes obvious that Nintendo really doesn't even have an alternative at this point.
Mind you I don't think this solves all (or even the core) problems Nintendo has, but they just don't have an alternative. They can't support a distinct console and a handheld anymore, not when handheld has become far more resource consuming than it was in the past.