You realize that not every Nintendo fan loves Zelda, actually I know lots a people that are not Nintendo fans but they just love Zelda and don't like Mario for instance. Mario has mass appealing for every type of gamers including casuals and families with kids, 3D Zelda attract core gamers, so totaly difrent appeling of those two games, and point on launch is to attract different type of gamers to platform.

Software drouth after launch was also huge problem but you keep ignoring fact that Wii U launch titles were bad and only biggest Nintendo fans bouth console on launch, all other potential customers didn't had any reason to buy console. 3D World like launch title would definitely helped Wii U to have better sales than it did because people would actually had good reason to buy Wii U, again it couldn't save Wii U beacuse Wii U had other problems too but sales would be better.

3DS had on launch had only 3 problems, time of launch, weak launch titles and high price, after Nintendo lowered price and release stronger titles Nintendo managed to save 3DS. Wii U had much more problems than 3DS and basically nothing could save it.

Who said every Nintendo fan loves Zelda? You seem to skip the point that Zelda would signal to Nintendo fans that their interests in the first party would still be catered too as does Mario, pairing them together would bring in the usual fanbase but not solve the fundamental problems, Zelda at least has more appeal to non-Nintendo fans than Mario. You also don't seem to get the situation here in today's industry Mario can appeal to any gamer but it doesn't mean it will bring in any gamer, Mario has become better at maintaining a core set of fans for Nintendo rather than bring in new ones, when a platform does well Mario sells very well when not the IP doesn't change the situation for Nintendo, it would still get 4m or so sales but won't drive the platform clear through the situation. Why do you think Nintendo is becoming less reliant on the IP, before they'd plaster his face on any and everything, Splatoon did more this gen for a platform than 3D Mario and that's because the latter is no longer the game changer it was a decade ago.

You keep harping on about launch titles this and that yet I've debunked that stance long ago, I've given you 3 examples of platforms that didn't have spectacular launches yet went on to do fine, your response "but the launch titles..." who cares dude fact that 3DS sorted itself out shows launch is a minor issue in a long haul, you've even highlighted with the 3DS that with good handling what comes after counts.

Wii U had the exact same problems as 3DS to the point it's deja vu, price, consumer confusion, no marketing etc... only difference is that Nintendo got up and tackled all the problems head on with the latter, with the Wii U non of the problems were ever at any point addressed and sorted. No marketing, no consumer communication, no price cut even 4 years on, droughts are still ongoing etc... Wii U could have been saved if Nintendo decided to put the same effort into saving it, the current President of Nintendo even said he was against how the platform was handled.

How does the last Direct show Nintendo hasn't changed in regards to NX? I don't understand how those two things are related in any way.

The entire point of the last Direct was to show off the last wave of 3DS/Wii U titles that are releasing this Spring/Summer.

First Party:
The Legend of Zelda
Pikmin 4
Super Smash Bros for NX (WiiU+3DS combined port)

Third Party:
EA Sports titles (Fifa, Madden)
Tom Clancys Ghost Recon: Wildlands
Just Dance 2017
Call of Duty
Skylanders
Dragon Quest XI (If it doesn't get delayed)

Possible unknown First Party and Third Party titles
Wii Sports/Nintendo Land equivalent launch title
Final Fantasy XV
Nier: Automata
Exclusive Square Enix title?
Exclusive Capcom title?
Yooka Laylee

If the rumors of Luigi's Mansion 3 being a launch title are true, than NX is Day 1 for me!!

I wouldn't put Geno as some credible source, however I think Luigi's Mansion 3 is happening on the NX, launch title or not.

Again, fact is that 3D Mario like launch title is much more stronger title and definitely will move more consoles than LM.

You said itself one of reasons why 3DS had problems at beginning is weak launch lineup, so fact is weak lineup was problem even for 3DS.

No, Wii U didnt had exactly same problems like 3DS, 3DS didnt had such terrible unveiling, name, marketing like Wii U and people didnt thought that 3DS is some sort of addon for DS. Like I wrote, 3DS had only 3 real problems, time of launch, weak launch titles and high price, after Nintendo lowered price and release stronger titles Nintendo managed to save 3DS. Wii U had much more problems than 3DS and basically nothing could save it, weak launch and 1st year games is one of those problems.

Also, you totaly ignoring fact that I wrote several times, that NX will arrive in middle of generation with huge popularity of PS4 and now with PS VR launch, so NX needs to arrive with huge bang on market, they need to launch platform with huge and must have games in order to bring huge attention to NX and despite PS4/VR/X1 people start saying "look that new Nintendo platform with those great games" no one said something like that for Wii U, they espacily need that after huge Wii U faile.

We going a circle, you think that LM would be better choice like launch title instead of 3D Mario and that NX does not need very strong launch lineup, I think quite opposite, so I don't see point continuing with this.

You're arguing that they have to launch with 3D Mario in order to have an impact when the fact is it's not the launch that's the main issue and 3DS shows you that. You must be dreaming or have a short memory if you think 3DS only had 3 problems as for a start many consumers thought 3DS was just a DS sku that had a 3D screen because of the name, 3DS had the same problems only Nintendo actually made an effort to save it.

I'm not ignoring the time of launch you're ignoring the fundamental problem of Nintendo's platforms which has always been the long haul, a big bang means nothing if it fizzles out with in months this is why they can't fire their cards all at once and need a balanced long term approach, LM and Zelda would be a good balance with one of the most anticipated titles launching with a notable title show casing the platform. 360 arrived in the middle of a gen during a popular PS2 and did fine and funny enough the 360's launch offering was average at best it's what came after that drove it and that's what I'm pointing out to you that it's no longer about just launch. 

I already said several times Wii U had weak launch and 1st year lineup, so I agree that big bang doesnt means much without strong whole 1st year. You assuming that Zelda and 3D Mario are all cards they have and they will not have nothing after that, I assuming they will have good games to release after launch regardless Zelda and 3D Mario, I expecting great launch and 1st year lineup. 

Xbox 360 arrived at end of one and at beginning of another generation, same like Wii U, not in middle of generation. NX will come in middle generation, exactly 3 years after PS4/X1 launch, in time of those consoles life when they are basically strongest.

360 arrived 4 years into its predecessors life in the middle of a gen and was announced 3 years into the gen, the PS2 was still in full swing and strongest.

I'm not assuming anything that's what you're doing here, I'm telling you it's better that they use their cards more strategically, Zelda and LM at launch, Pikmin 4 following the launch window,  another title for Spring and summer then 3D Mario for Q4 for example. This way momentum is maintained and far better than your big bang approach, only way I can see them having a load of games post launch with a big holiday title at the end of the launch year if they launch with Zelda and Mario is if the is a shared library than yes they can launch with those two although I doubt they will even then as the portable side has bigger movers than Mario in games like Pokemon so on.