Other M was on Wii, and the reason it sold poorly wasn't the lack of HD.

You keep basing assumption of sales today based on games from different eras. This isn't the 1990s. It's not 2010.

This is 2014. Gamers want to play a dark HD sci-fi adventure more than they want Diddy Kong driving a cartoon hovercraft in HD.

Another reason was that it was garbage, but a HD Metroid game today would draw a big amount of appeal just from the fact that it would be the franchise's first appearance in HD graphics. Especially since it would benefit from it much more than a cartoonish game.

Not going by MK8's sales they don't. Not on the Wii U they don't.

Metroid Prime isn't your traditionnal shooter that sells a lot on the other consoles. Prime was seen as fantastic when it came to GC and it sold quite well for a reboot. On Wii it did not work like that. I would expect Metroid to appear on 3DS first to rebuld the franchise with lower risks.

Today's console audience, with the exception of a small band of Nintendo loyalists, is much more interested in the dark over the light, the realistic over the cartoon. 

You audience is interested in simplistic shooter than in anything else and I don't want Nintendo to turn into another shooter company. On Nintendo platforms, platformers always outsell shooters. You DK comparison was very bad since the main reason it flopped was not because it was cartoonish, but because it was the unwanted sequel of a 2010 game when people expected something else.

I am not against Retro Studio doing something more western, but your will of having realistic games for the sake of having realistic game is unwanted on Nintendo platforms. The Wii U shouldn't become a PS4 clone.

Mario is pretty much the only remaining exception.

Tropical Freeze tells the true story; a series that sold 6 million less than four years ago, but bombs in 2014.

DKR would suffer the same fate.

Says who? TF failed because it's a 2D platformer on a home console, not because people don't want Donkey Kong or something. It would have sold better on a 3DS where it makes sense. DKR isn't on the same boat. It would be a first party kart racer on a home console. That actually makes sense.

Says who? TF failed because it's a 2D platformer on a home console, not because people don't want Donkey Kong or something. It would have sold better on a 3DS where it makes sense. DKR isn't on the same boat. It would be a first party kart racer on a home console. That actually makes sense.