Switch will be incredibly successful at launch, heck im buying one and i hate consoles. So imagine all the hardcore gamers like me picking one up. In saying that the Switches biggest problem is maintaining the momentum. Its smart they pushed Mario back so Zelda can get alot of the focus and Mario will push the Switch for another year. But after that its all downhill.

Nintendo keep pushing it as a home console though. That automatically in my mind says it is way to weak. As a handheld Ihave no problems with it. I and many others were hoping that the dock would have extra beef for the console to work in home console mode that would get it closer to PS4 level.

The Switch isn't appealing to non gamers like the Wii did. Hell, my parents bought a Wii because of the fitness commercials and the family nature of the commercials (family's playing bowling and golf with the wiiRemote) that was on, tv even my older sister bought one all of them have zero interest in gaming. The system was played for a few times and never saw the light of day again.
I can't see Switch selling anywhere close to what the Wii did. I reckon it'll sell very similar to how the Xbox One is selling.

Prior to Wii's launch:
Lots of Nintendo fans were talking about the Wii, which lead to strong initial sales.
After launch:
Sales gathered traction from kids and word of mouth about the all new motion controls and relatively low asking price
Over lifetime:
Word of mouth permiated previously untapped generations and demographics, parents and grandparents picked up the console not just for their kids but for themselves.

By the end of the Wii generation the hype about motion controls had burner out, kids that were initially hyped about Nintendo and it's games moved on, for many of the younger generation the Wii was the stepping stone into gaming that for most ended with moving to either xbox360 or PS3 where they considered the games more adult oriented.
The parents and grandparents did not stick around either, the whole thing was a one off, a combination of enticing gimmick and market timing.

The Switch launch has much more parralels to the WiiU, and we all know how that turned out.

- poor 3rd party support
- strong initial sales that pattered out
- confusing message (VC, paid online, app needed for some features, etc)
- thin launch lineup
- lacking many of Nintendo's most requested IP's
- still using a tablet design to try and tap the now mature tablet market
- no real major pull to set it aside from other devices

- it's a tablet that's seen as a home console.becayse they refuse to take the 3DS off the market, so they could call it a handheld till they're blue in the face but people would see it as a home console

Personally, I think it'll do better than the WiiU, but land somewhere between 20 and 35m

Wii was mocked by online gamers and people thought it was going to tank. Same deal here.

Switch is the new portable platform. It will get those and all other normally portable titles along with a staple of home console titles. This should be already obvious but will surely be come E3.

Wii was a hell of a casual fad and lived of that.

Nothing remotly the same deal here.  

I don't think Wii levels, but considering I do think this is Nintendo moving towards unifying their systems and library so... assuming they DO release Monster Hunter games with Capcom, Pokemon, Yokai Watch, etc- I think the system could do like 80 million. Purely guesswork at this point, but I find it hard to believe if Nintendo genuinely does move towards making the Switch their one system that it wouldn't sell quite high. In the end Nintendo has a rabidly loyal handheld fanbase so

I'm so optimistic about the Switch, I've got really no choice but to be disappointed.

-I already use the hell out of Smart glass for Xbox One and I have an awesome LG Tone Platinum headset. A phone app will eliminate the need for a chat pad or anything else.

-Have you guys seen what a PS4 game looks like on the Vita? Fucking insane. The smaller screen makes everything look better! If the Switch can provide similar, I'll be in heaven.

-Any game that companies wanted to release on Wii U (*snicker*), Vita, 3DS, or even Mobile--put it on the Switch. It has the dedicated handheld market all to itself and it's basically a mobile device so if can run all of their content, too!

-My phone already uses USB C so I'm already equipped with a billion (okay. Three.) ways to charge it. My mobile Turbo Charger, my spare battery, and my car charger.

-Maybe, for the first time since PSP, I can get a fucking WWE game that I can take anywhere! It would be my game of the year if they offer one! Instantly my favorite version simply because it's portable.

Okay. Okay. Calm down, Lewis. Calm down.

100 million sold--after an initial lull in sales. Also, Nintendo will release a new version every year because Nintendo.

It should have options, if Nintendo isn't dumb. Mix the audio like your standard gaming headset, or choose to only listen to chat and have the audio come through the TV, or have it all on the TV.

M$ and Sony already do it that way. You can even choose to use Kinect for voice chat and have the sound come from the TV back on the Xbox 360. Even offer different volume options for chat and game audio.