I'd get:
Xenoblade Chronicles X (bundle)
Splatoon (replay value, incredibly fun and addictive, and keeps getting better with added content)
Mario Kart 8 (replay value, most beautiful game on Wii U, and fun as always with a HUGE track selection and possibly more DLC coming)
Super Smash Bros for Wii U (replay value, and duh)
Captain Toad Treasure Tracker (seriously, this game is a clever, charming, and adorable masterpiece)
Super Mario 3D World OR The Legend of Zelda: The Wind Waker HD
Upcoming Games To Get
Definite: Kirby Star Allies (Switch), Mario Tennis Aces (Switch), Fire Emblem (Switch), Yoshi (Switch), Pokemon (Switch), Kingdom Hearts 3 (PS4), Monster Hunter World (PS4)
Considering: Fe (Switch), Donkey Kong Country Tropical Freeze (Switch), The World Ends With You (Switch), Ys VIII (Switch), Street Fighter V: Arcade Edition (PS4), Kingdom Hearts 2.8 Remix (PS4), The Last Guardian (PS4), Shadow of the Colossus HD (PS4), Anthem (PS4), Shenmue 3 (PS4), WiLD (PS4)
