I got a Wii U in September 2015.
It’s a lot better than our original Wii, but we have used it very little, being full PSN gamers.
I like the Sports Bowling, but don’t play it very often.
Pixel Junk Monsters on Wii U, of course I bought it, but it’s OP the way you can target air and ground with things you can’t on PSN. I was active playing this though, and posting on MiiVerse in the beginning… I had no challenge.
We have Splatoon, Super Smash Bros, Mario Maker, etc. My 9 year old plays this stuff some, lately Mario Maker more than anything else.