I'm probably an ideal candidate for meditation because just the thought of it is nearly unbearable. "Wasting a whole ten minutes doing nothing?!"
But it's hard for me to get past the feeling that it's a waste of time. As someone who is on public transit for two hours a day, and an owner of a nice pair of noise cancelling headphones - I wonder if I could make use of that time by doing this. Guess I'll give it a try.
Since all Wii U games are available as digital downloads, I'd expect that's the only compatibility you're going to get. They might have some kind of trade-in-your-disc-for-a-digital-download offering, but I seriously doubt it. It would be very un-Nintendo of them.
Not sure if you noticed in the Switch launch video, but that's Skyrim they're playing. It looks like Nintendo is putting some effort into third party this time, and they'll be the only "console" which allows you to play "console" third party games portably. Pretty significant advantage.