We have it. We like it. The LEGO games work very well, so my son really enjoys them. I've considered getting a second one. I use it for Wii U Fit and golfing because the older Wiimotes still work on it. And it plays all of our older Wii games. No need buying a new library.
I actually am not a fan of the new tablet controller. After watching my kids be able to pick up the older controllers and be able to figure out a game in literally less than a minute, you go to a gigantic, clunky tablet, Nintendo? So I use the Batarang-looking one.
The new MarioKart gives my wife vertigo. Really.
All in all, with Netflix and Amazon Instant Video, it's good home entertainment system.