I'm a little confused with how you worded it, but 5 years would be 2017 (It released 2012. 2+5=7. Not trying to be a jerk or anything).

Exactly, all we've really seen is a cutscene, and Link riding a horse fighting a few moblins. Chances are they just weren't as far along as they would have liked. I remember the Skyward Sword footage at E3 2010, and it looked MUCH farther along than any of the footage of Zelda U

https://www.youtube.com/watch?v=2dYgrMz_XBI

and it was still delayed. We got to see combat, boss fights, tons of examples of how the Wiimote worked in the game. Zelda U we got a cutscene.....

In this scenario, the Wii U would have gotten more third party support in the early years because the X1 and PS4 weren't out yet, so it would have gotten a lot more games from the PS360 era. There would be less games from the current gen, but still a few, because as long as publishers find it profitable to put a game out on a system, they'll find a way.

The NX would still exist and be in development, we just wouldn't have any confirmation from Nintendo. We'd still have a thousand rumor threads, but we'd just have an unofficial codename for it.

Zelda is 50/50. It's likely that it got delayed for NX, but whose to say that it wouldn't have been delayed for another year anyway? When is the last time a new Zelda game on home console didn't get delayed two or three times over?

We would have gotten the next 3D Mario, Pikmin 4 AND Metroid... And Star Fox would have been given more time and a bigger budget.

I think Wiiu is a Step to NX...
Since its launch, Wiiu was always been thinking to become NX handheld...
So I am not surprise about wiiu ports, i think NX will use wiiu OS and streaming... so I don't think Nintendo think wiiu was a error, it is a way which must be taken

I really dont see point of threads like this, what if Wii U was more powerful, what if Wii U had good marketing and name, what if Wii U didnt had gamepad, what if Wii U was relased in 2010 or 2011...

Gaming would be in a much better state than it is today.

And I might own a console from this generation.

In order for Wii U to be successful, it would have had to have had a Zelda and Mario Galaxy game on it already.
It would have had to have had many more Nintendo games.
There also would have had to have been no mobile industry boom.

1. NX would exist, but it might not have been announced at this point. NX was announced early as an assurance that the partnership with DeNA wasn't heralding the end for dedicated Nintendo game consoles. If Wii U was going strong, there would be no need for that reassurance.

2. Wii U would have significantly more 3rd party support, but still have strong 1st party support.

3. Don't know on this one. NX may have impacted the timing of Zelda U - but weak Wii U sales might not be the only reason to have poured more time and effort into NX at this point in time. NX plays a major part in the grand scheme that includes Nintendo account, mobile apps etc.

4. Fully agree that there would be a huge amount more games, but not necessarily more 1st party ones.

5. Interesting one - XBOX had a bad start because of that backlash on the first reveal - and Sony capitalised on that and boosted the popularity of the PS4 in the months prior to launch. Wii U was already out of the gate and running at this point. If it had been more successful it might well have expanded its share of the pie to a greater or lesser extent, but I don't think it would have changed the ratio between PS4 and X1 sales. I could envisage Wii U and X1 being very close with PS4 still comfortably ahead but with a slightly lesser lead compared with now, But then, what do I know.

Other things that might have changed:

If the Wii U concept had been sold better and had been more successful, they may well have exploited it's capabilities further, like the fact that it can support more than one Gamepad.

1. Of course, the NX was already about to be revealed, nothing changes here, next year the Wii U will complete five years and will end a normal cycle. In other words, the Wii U is not leaving before time.

2. Obviously, even Ubisoft said would not produce more because the public is very small, usually those who buy Nintendo  abstain from purchasing third party products see the top 20 bestseller list for example. About running third party support, I don't see any problem, WiiU is closer to PS4 in terms of hardware than the Wii/PS3. Games like the witcher 3 would be ported without problem, but lower resolution.

3. I think zelda was brought to 2016 just for a celebration of 30 years.

4. So very true, once the games like Kirby or Yoshi had reached around 3 million sales less popular franchises could have a chance and we could get games with a very high investment, as high as Mario Kart 8, include here forgotten franchises like Mach Rider or Ice Climber.

5. There would probably be a better balance in sales, with a small number difference and much less fanboys/ haters.

C'mon guys, we need to go further. What about amiibo? The Nintendo smartphone games? The 3DS? There's more than 3rd parties and ports to this.

But yeah, not much would've changed. A few games here and there would have been made/cancelled (Amiibo party comes to mind), relationship with Ubisoft would be pretty good (if success expands to more than just Nintendo), and that's about it.