1) 8.5/10. What's holding it back is t
2) I've play almost every day for a year now, although half that time has been Wii games.
3) Monster Hunter Tri U (favorite online game, great for off-TV play, always something to do), Arkham City: Armored Edition (nothing like beating people up as Batman & friends), Need for Speed: Most Wanted (the closest thing to an arcady racer that's not Mario Kart, another great game to play off-TV). Special mention goes to Nintendoland for being an excellent choice for when a guest is over, but I never touch it if I'm alone.
I should also mention that I haven't played many Wii U games yet. I have a crapton of games sitting on a bookshelf waiting for their turn.