It's between Donkey Kong and Mario Kart for me. There are Wii U exclusives that are out already that i want but those two games would make it enough to justify a Wii U.
Xbox One, PS4 and Switch (+ Many Retro Consoles)
'When the people are being beaten with a stick, they are not much happier if it is called the people's stick'- Mikhail Bakunin
Prediction: Switch will sell better than Wii U Lifetime Sales by Jan 1st 2018