For those pointing out that 3rd party development jumped ship because of the Wii-U's lower power, that's not it. 3rd parties really don't care all that much about the power behind a system, there are a lot of tricks for downgrading a game to run on weaker hardware and that would have been done by the optimization process. Remember that cross platform releases still hit the 360 and PS3 for a long time after the launch of the XBone and PS4.
So why did they leave the Wii-U to die? Simple- Nintendo was pushing the touch screen on the gamepad for the first year of launch titles really hard, Nintendo wanted all of it's games to have unique functionality for the Wii-U gamepad. This can be seen in the reflection of those first year titles, games like W101 and Zombie-U forced the usage of the gamepad by having vital displays and gameplay depend on the gamepad screen and with the Batman port actively using the Wii-U gamepad gyro (iirc.)
3rd parties jumped ship because this requirement from Nintendo would mean that they couldn't just swap over cross platform releases to the Wii-U, games would have to be developed for the Wii-U in mind and those games couldn't be easily ported to other platforms either. We see a lot of cross platform launches on the PS4 and XBone because it's a way for publishers to tap a larger market without making a serious investment into the games to get them on both platforms, games produced for one can easily be ported to the other. The Wii-U forced itself apart from that by forcing the gamepad onto 3rd party development and 3rd party development rejected the idea as it would require significant development into games to have them on the Wii-U when the market was much smaller than the combined market of PS4/XBone Crossovers.
It's not the developers that make the decisions to not develop for a console- it's the publisher. Publishers don't care about the lower power of a console, they care about economics and profitability. Developing a port for the Wii-U would have higher development costs than PS4/XBone crossovers, reach a significantly smaller market, be a much higher risk, and have a lower return on said investment of porting. Those factors are even worse for games developed and launched on the Wii-U for 3rd parties. Remember that they are businesses and are aiming to make money- not engage in console wars on social media about which system is more powerful.
We thought Nintendo had learned their lesson from that as they dropped the forced gamepad requirements from games a while a go, but we still get games that come out that remind us of just how bad that design philosophy is: See Starfox Zero.
The NX is the chance to distance themselves from that design. From the sounds of it, it will have a screen in the controller as the Wii-U did- and it would be a hard sell for the console adoption rate if it doesn't have backwards compatibility with atleast Mario Maker. And the vague statements made about the NX, coupled with some unreliable rumors are painting a picture of a combined portable/console system which would replace both the Wii-U and 3DS in terms of development. If such a thing were true then it would be an effort from Nintendo to prevent another weak console launch and cycle by populating it with it's portable developers and reduce the compromises the portable developers make in game development to have it fit on portable platforms.
Edit: This would get more games onto the console as development cycles and releases for the 3DS are insane due to the crazy strength of the 3DS market in Japan and the stability of it outside of Japan and provide it's portable platform with more robust options due to carrying console comparable power.
And for the record- I don't regret my Wii-U purchase. Been running a PC as my primary platform with a Wii-U as secondary and been mostly happy this console cycle, most disappointments come from the games that do get released having really bad aspects and not about games not getting released.
So why did they leave the Wii-U to die? Simple- Nintendo was pushing the touch screen on the gamepad for the first year of launch titles really hard, Nintendo wanted all of it's games to have unique functionality for the Wii-U gamepad. This can be seen in the reflection of those first year titles, games like W101 and Zombie-U forced the usage of the gamepad by having vital displays and gameplay depend on the gamepad screen and with the Batman port actively using the Wii-U gamepad gyro (iirc.)
3rd parties jumped ship because this requirement from Nintendo would mean that they couldn't just swap over cross platform releases to the Wii-U, games would have to be developed for the Wii-U in mind and those games couldn't be easily ported to other platforms either. We see a lot of cross platform launches on the PS4 and XBone because it's a way for publishers to tap a larger market without making a serious investment into the games to get them on both platforms, games produced for one can easily be ported to the other. The Wii-U forced itself apart from that by forcing the gamepad onto 3rd party development and 3rd party development rejected the idea as it would require significant development into games to have them on the Wii-U when the market was much smaller than the combined market of PS4/XBone Crossovers.
It's not the developers that make the decisions to not develop for a console- it's the publisher. Publishers don't care about the lower power of a console, they care about economics and profitability. Developing a port for the Wii-U would have higher development costs than PS4/XBone crossovers, reach a significantly smaller market, be a much higher risk, and have a lower return on said investment of porting. Those factors are even worse for games developed and launched on the Wii-U for 3rd parties. Remember that they are businesses and are aiming to make money- not engage in console wars on social media about which system is more powerful.
We thought Nintendo had learned their lesson from that as they dropped the forced gamepad requirements from games a while a go, but we still get games that come out that remind us of just how bad that design philosophy is: See Starfox Zero.
The NX is the chance to distance themselves from that design. From the sounds of it, it will have a screen in the controller as the Wii-U did- and it would be a hard sell for the console adoption rate if it doesn't have backwards compatibility with atleast Mario Maker. And the vague statements made about the NX, coupled with some unreliable rumors are painting a picture of a combined portable/console system which would replace both the Wii-U and 3DS in terms of development. If such a thing were true then it would be an effort from Nintendo to prevent another weak console launch and cycle by populating it with it's portable developers and reduce the compromises the portable developers make in game development to have it fit on portable platforms.
Edit: This would get more games onto the console as development cycles and releases for the 3DS are insane due to the crazy strength of the 3DS market in Japan and the stability of it outside of Japan and provide it's portable platform with more robust options due to carrying console comparable power.
And for the record- I don't regret my Wii-U purchase. Been running a PC as my primary platform with a Wii-U as secondary and been mostly happy this console cycle, most disappointments come from the games that do get released having really bad aspects and not about games not getting released.