Got a Switch yesterday. Phenomenal system. I was one of the biggest Wii U fans (some fantastic games are on the system), but this seems to have fixed most of the hardware problems that system had. The limited range as a handheld was obviously a huge issue that's gone now, but switching (pun not intended) between handheld and tv is so easy now. With the Wii U, each game would do it differently and some wouldn't support the handheld at all for anything more than a controller. It really feels like it's what the Wii U should have been hardware wise.
Mario Kart on the system makes perfect sense and I hope more of the Wii U's best titles find their way over. I'd pay full price to get the likes of Bayonetta 2, 3D World, Wind Waker HD and Mario Maker on the system. Nintendo isn't one to let their games disappear, so Mario and Zelda should find their way over at some point, but I hope Bayonetta doesn't get lost in the failures of the Wii U as that was one of my favorite games of the past few years and feels very much "this gen" to me.
I figure a virtual console will come over eventually, though that is less of a deal breaker with an SNES Classic on my desk than it would be without.
So far, I've only played Mario, but Zelda is on its way from Amazon and I can't wait to revisit that from the start after the DLC comes out. If Nintendo releases titles every few months (even if done by porting Wii U games) this console could have a very bright future. Metroid is still a ways off and they need to avoid the draught that the Wii U went through waiting for BotW, where there wasn't much coming out for the system.
The one thing I'm pondering is if buying the pro controller is worth it. For me, it seems like it will be as I'll drop hundreds of hours into Breath of the Wild alone and I still have birthday gift cards to spend.