Nooo. it's very unlikely Nintendo will get good 3rd party from western devs. They do not think 3rd party games sell on nintendo unless it's a handheld.

If it's handheld device and home console... It will receive all games of Nintendo, like 3DS + wiiu games on one console...
It can sell untill 10 millions / year.. Interesting for thirds.

After xboxone have thirds but not enough exclusifs games 

It'll all depend on sales and power of the console.

No, I'm 99% sure it won't. Just like their previous consoles, they're not going to manufacture competitive hardware, that can cater to the masses. Maybe only in Japan, but those would be the usual E rated games if that even counts as third party support. Nintendo haven't had third party support since the SNES, they've never really fulfilled genres like Sandbox, FPS, RPG and Racing, hence one of the reasons they flopped with the Gamecube.

If the rumors about the NX hardware is true then it will most likely go down the same route as the N64, Gamecube and Wii U. They all were specific hardware and stood out from their competitors and got poor third party support. I think it's actually only going to get worse and worse as it's released 3½ after current gen consoles unlike the Gamecube which was released 1½-2 years after the PS2 and flopped. The NX will be a delayed 7th gen console which could be a big problem for their sales since the PS4 and Xbox One will be in total domination of the market by then.

The NX will likely be Nintendo's last stationary console. I think they might sell between 5 and 8 million NX consoles, because by then the next Xbox and Playstation will be released and then they're going to struggle even more with the NX than the Wii U. Keep in mind that most of the Wii U sales were during the first half year which was around 5 or 6 million in that period where they had third party support, but there's no way in hell third parties are going to give Nintendo another chance at launch again.

As long as Nintendo keep releasing consoles that are considered to be geared towards children and consoles that has an overreliance on first party productions, inferior online games and consoles that has gimmicks, bad controls bad graphics and inferior hardware, for example not using the latest tech like DVD or Blu Ray and missing out on a lot of genres that caters to the masses like RPG, FPS, Sandbox, Racing etc. then there's no way ever they are going to succeed with any of their consoles.

If its not X86 architecture and underpowered then no it won't....

WiiU had 3rd-party-support at launch. But it didn't sell much. Visually improved ports sold good on PS4 (Tomb Raider), but not on WiiU (Need for Speed). It seems Nintendo-customers have different needs than customers on other platforms. If 3rd-party doesn't cater to these needs (and I don't see why they should change), they will not sell and therefore they will not support.

There are thrid-party games that sell well on Nintendo-plats, but mostly it needs special effort and special consideration. So I can't see good 3rd-party support in the near future.

Well if you consider 1.2 million sales on a base of 40 million then sales of .3 million units should be decent enough on a 12 million userbase for you wouldnt it?Not saying it's the definite answer but clearly, with a bigger userbase Most Wanted U clearly would have sold a lot more than it did. 

Nah, data shows that sales are not linear to userbase. A bigger userbase might have brought in a few more sales, but nothing big.

On the other hand shows Hyrule Warriors, Bayonetta 2 or Lego City that 3rd-party games can sell alright, even on an ill-received platform like the WiiU, if there is done enough to make the game appealing to the base.

Not saying it's linear. But I am saying 28 million bigger user base will make a difference. Less or more? Who knows.

And Lego City and Hyrule Warriors both selling 1 million + is a great feat. Numbers on Bayonetta 2 is all over the place so I wont comment on the performance on that game.

Depends on its form, if there's a component/device that supports more mobile like games, then sure. Handheld might get some. Home console form? Not a chance, there is zero incentive for developers to even try at this point, Ubi was badly burned for their efforts at the beginning of the 8th gen and there's simply no one left who is willing to take the risk, there's no cost incentive either, as opposed to the Wii in its heyday.