Nintendo OS: Only Nintendo made devices or third party devices?

I don't care as long as Nintendo stops playing catch up. In other words, as long as the hardware is top notch and up to standards and not significantly lagging behind it's competitors.

Edit: Oh I think I misunderstood your post. Your proposition does sound interesting, and I don't exactly think it's one hundred precent a bad idea, but would specs vary between devices? If so I'd be against it. (I also wonder if it would be successful) Also, based on what Nintendo has said in the past, it doesn't seem likely they would do it.

it depends on how nintendo approaches development.

if its all close to the metal coding to get the most performance then there wouldnt be much other manufacturers could do. they couldnt change the processor or mess around with the OSs features like android. they would have to use the exact hardware (as in exact model number, clock speed etc) specified by nintendo. they cant mess with the OS because if they do they could inadvertently break the games running on the device (adding a messaging app that runs in the background could cause the game to crash because it takes unexpected CPU time for example). i suppose they could offer different form factors, different controller layouts (as long as they still provide the same functions), different quality of screens (same resolution but resolution is not the only thing that dictates quality of a screen) and so on. would i be interested if i was samsung and though? probably not....i would want more control over the device.

if nintendo intend to make their games a bit more hardware agnostic though then it could be a very interesting proposition.

@simuseb2: Imagine Nintendo says anyone can make their console but it must have X specs. A manufacturer could add say, more RAM for speed, more storage, more capabilities (like say the Nintendo console doesn't play Blu Rays, 32GB flash for $249 and a third party makes one that has 128GB flash, plays Blu Rays, and something else extra for $300-$350 and gives a cut to Nintendo)

So Nintendo would set base specs and all versions would require that at minimum so games would run sufficently. A la Google with Android OS