A nice, slick and well marketed machine -> Done
We don't know anything yet about the console and almost all of the threads or articles about it are asking questions about what it really is/does (handheld? tablet? home console? hybrid?). Its not what I call "well marketed" when noone knows anything (or almost anything) about your product. It barely made the news : 30 seconds at the end of the TV news in France saying basically "Nintendo announced its next hybrid console, coming in March, no more information at this point", and the newspaper with a video game section I've read the next day were talking about games like Persona 5 (which will be at the Paris Games Week) and not one word about the Switch (I saw some other newspapers had an article about it, but once again, the minimal stuff). I've seen more PS4 ads this week with the Champions Leagues games than Switch's. Well, there are no Switch ads, so it's not that hard ^^.
Unified library/concept and preventing internal competition or droughts -> Done
They said, several times, that the Switch is a home console and that the 3DS will keep getting games and should have a proper successor (maybe still undecided about it). Nothing has been said about an unified library or concept and this kind of declaration says otherwise.
Minimal 3rd party support (from Japan) -> Done
The Wii U already had some Japanese 3rd party support, at least at the beginning. The Switch trailer shows exactly 0 Japanese 3rd party game. The only Japanese 3rd party game we know about is Dragon Quest 11, also available on 3DS (which contradict the second point). We even saw more Western 3rd party games than Japanese ones so far. So the Japanese 3rd party support is still a question as unanswered as the other ones.
Your 3 "solved problems" only look like "still unanswered questions" at best if I'm not missing new information...
1. I was talking about it not being a purple lunchbox or something clearly defined as for younger audiences. I meant that it looks good while the Wii U was meh and a more confusing concept to sell.
And that one NS trailer was already better marketing then any Wii U trailer i saw. So the NS marketing has already won over the Wii U's one. There were rumors Nintendo revamped their markering department, and those appears to be very true. Thank God .
It's clear from the trailer alone, that Nintendo now has a good looking device and a clear matured marketing strategy. Which Wii U certainly lacked and 3DS was okay/good on.
Come on, that's just PR because the 3DS needs to get through it's last big holiday season. They said the same things about the DS remember. Hell, they even denied launching a XL version like a month before announcing it :p.
Nintendo consolidated it's HH and HC for this reason. To make the switch. And it talked a lot about unifying software and hardware in the past. A NS lite version may happen but it will still be a NS. NS is it and Nintendo had little choice but to build one main device.
Do i really need to explain that the Japanese support will jump on the NS like crazy? Sony won't be competing again on HH and Japan is now mainly HH or mobile. And the NS can appeal to both of those markets. That's the whole point of it. It's designed to win over Japan. It will have great support unless Nintendo is caught insulting the emperor or something.
Oh, the Wii U did not have good japanese support. Even the 3DS had just good support. The Vita was able to lure away a decent number of it.
By the way, I did use the word "mostly" solved in earlier comment, but the above points are supported by good indications and reasons.