I looked at the Wikipedia list of Wii U launch games and not many of the your games are on the list.

Anyway, as I already said, a core game is a typical game on the industry, that's intended for the typical customer. The game shares the typical customer's values. NSMBU (as far as I know, I don't have the game) and Wii Fit U are not games for the typical customer because of their different value and mostly different content. Wii Party U (at least Wii Party) is much closer to core than Wii Fit, but it's content is real life instead of escapism, which would make it a non-core game. M&S is a typical core game. Wii Sports Club, yes, not for your typical customer (however, this is just a Wii Sports re-release) Wario Ware (Game&Wario) for your typical core customer. Sing Party isn't a familiar game by any means.

Just Dance is Ubisoft's game. 

I didnt mention graphics as a reason for it to go in the closet. Not sure where that came from. It went in the closet because they got bored, not unlike a lot of products that were the "it" thing to have. 

But those games were not released that close to each other. Outside of Just Dance non of them were annual. There were only 3 games in the Deca Sports series. So which games were released to close to each other? Deca Sports has more than a million sold and thats just the orginal. So how was it not a popular game. Another example Carnival Games only had two on for Wii the orginal sold real well, the sequel...not so much. Its true about shelf space so whats the excuse for games like Elder Scrolls. Call of Duty? hell sports games that maintain sales throughout the gen and in some cases go even higher. (funny enough COD sold worse and worse and Wii, but better and better on other systems).

What new games could have been made that would make them care?

I disagree on the mini game compilations, because they only became popular with Wii, how well did they do on PS2? what about Wii U? PS360? etc. But for the sake of argument ill say you are right that means the only non core games are the exercise ones? How many of those could they have made before people got bored of that? Not many judging by sales we see now. Add Zumba to that list.

No, you said the soccer moms don't care about graphics, and I was astonished about the statement and asked how do you know what the soccer moms care about. Your reply to that was that the soccer moms put their consoles to the closet.

Million isn't bad, but that's just a number that people buy the games when there's nothing specifically interesting to buy. This is why all popular system have so much crap on them.

As I said about COD, that's why Activision keeps changing the tagline of the games - to keep the content fresh. Why would've COD sold on the Wii? It's not a game that's made the system in mind, was released years after the HD-versions and it's not an interesting series anyway - for others than the core, that is. COD sold better on the other systems because the games industry knows how to market for the core gamers.

That's a good question, and answer to that is worth billions. Simply put: Nintendo should've kept making games that were arcade by nature and feature new content; that's what people bought when thay bought the Wii.

I really haven't paid much attention to how the minigame collections have done on which system. Part of the problem is, that Nintendo's Mario Party have been hugely popular for almost two decades already, so it's hard to compare on some less popular games. No, the excercise games aren't the only non-core games.

Excercise games had the same thing as music games: too many and too fast. Guitar Hero lasted almost a decade before dying out. 

in my experience they dont care about graphics. Has your's been different? I mean the games they were buying werent exactly 1080hp

actually i was wrong about Deca Sports the original sold 2.50 mil copies and the next one sold .82 mil and the next sold .24 mil. That is one hell of a drop. the original Carnival games sold more than 4 mil copys, the sequel sold .61 mil. THat is a hell of a drop i cant think of another series that had a drop that big. How does one account for that? It cant be that there was more interesting things to buy because series across the board was going down in sales. 

If a tagling is all it needed how come other series arent maintaining there sales? especially ones that started out selling a lot, it cant all be just marketing.

So if we dont know, then Ninty didnt know. I'm gonna assume that there were NO games they could have made that would have made a difference or else they would have done them.

Its not hard to compare at all, some of those mini game comps did really well intially which is why so many were made in the first place. What other games would you consider non core?

But doest that kind of prove my point of people getting bored with it? Whether they made too much was irrelevant, they still got bored. Even after a break people still wont pick up the newer music games.

Yes, though it's a mix of both!

Ninty consoles don't rely on top ranking HW power and they rely a lot more than others on first party titles with styles of their own that typically look as intended even with low HW power. With deeper titles allowed by fully using WM Plus features, Wii could have attracted more harcdcore gamers that could have used it as their second or third platform, and also kept the favouir of that part of casuals that eventuallly get tired of simplified games and start desiring a harder challenge. Sure, it wouldn't have brought Wii to 150M or more initially predicted by the most optimistic fans and analysts, but 120M (so more than actual Wii sales current Wii U LTD ones) could have been possible, and more longevity too, allowing Ninty to launch its successor without needing to rush it.

(I added numbers to be clear which parts I'm answering to.

2. Yes, but my point is simply that as the more complex WM Plus is tottally BC with the original, simplified WM mode, devs could have chosen the most suitable command scheme for each game since the start, and maybe even offer both for games with a wide enough range of difficulty settings

1. Years ago I looked for pricing of available models, maybe there were problems of supplies of suitable 3D models, but while the accelerometers surely ceased being a problem regarding costs, adding the 3rd axis to rotational sensors too would have added just a few dollars to costs, but those dollars would have been spent better than adding later the Plus features, when they ended up being mostly unused, wasted

3. About this, maybe as a PC gamer I don't totally get the need of consoles to focus too much on a thing, a feature, a user class target, I'm used to and I like a system that with the proper interfaces and enough HW power can cater to countless groups of potential users, with local multiplayer probably being the only weak point, even with HW power a lot bigger than consoles of the same period, PCs don't handle simultaneous local multiplayer as smoothly