You serious abou Luigi and Mario Kart???? You're totally wrong about Luigi, and Mario Kart is only selling less if you compare it to the Wii-iteration. Mario Kart 7 has sold more than 8m copies so far, on a 30m instal base. That's HUGE. You don't know what you're talking about.

Isn't taking that iconic franchise and bringing it back to the 16 bit era gameplay exactly match what is said? Failure to innovate and relying on nostalgia. Not that it's bad mind you, i will be picking up the game day 1 but your reasoning confused me especially having the balls to that when it's the complete opposite by playing it safe. 

Attach ratio for 1 franchise doesn't mean much when other games' sales are poor. Overall software sales on Nintendo systems have always been low. Now, this gen, it's going to be even lower given than their key franchises aren't as popular as the previous gen. 

I actually think that GC had the second highest attach ratio on any console ever, so I wouldnt say that the software sales alwahs been low...

They have in some cases... Capcom tried with SF4 and MvC3, but received a backlash from many fans both times because they felt they were being ripped off content-wise.  Long-time companies like Capcom and SEGA definitely would if they could, but unlike Nintendo, they don't have their own console where they can push their own titles with little to no competition.  It's much harder to price an 8-16bit style game like 2D Mario n Sonic or similar titles at $50-$60 when it's going up against the likes of Halo, COD, God Of War, MGS, GTA, Skyrim, etc.  Then they would start selling closer to Rayman Origins numbers... great throwback platformer with amazing visuals, but most gamers didn't see enough value to fork over $60 for it.

A system can have an attach ratio of 20 but software sales are still low if it only sold 20M units of software.

Rephrase that...Nintendo doesn't give the fans what they want, you just so happen to like what they deliver, plain and simple. I grew out of Nintendo, so speak for yourself. Nintendo has an old fashioned stance that you market new games around the same old characters in a spin dry fashion. No new characters, just nostalgia for days. They are there for you in childhood, but they dont follow you into adulthood with their offerings. Most Nintendo fans like the product so they stick with it because they know its never going to change and thats comforting. To gamers like me, change is a good thing and sometimes franchises must go for new ones to be invented and set a newer standard. Nintendo is after the newer generation of gamers. If I was the age I was when I got my first Nintendo console I would be going gaga over it as well. 

Enjoy Nintenod products, but to say they give the fans what they want is definitely a strong opinion I am willing to dispute. Nintendo is an old fashioned company that does what Nintendo wants.

P.S.

Nintendo die hards can refute what is true, remember this. At one point in time a great portion of people here were Nintendo fans and grew up with Nintendo. Theres a reason we grew out of it. I completely agree with Gamespot. Theres is something wrong with Nintendos broad outlook when it comes to dedicated gamers outside of their first party and for the growing serious gamers in their first party.