I own a Wii u so everything I mention will be for that system.
Animal crossing. I would like it if it was the first game in the series where you move to the city and you work nook in his small strip mall shop which eventually upgrades into a mega mall and the house would be a condo which upgrades to the penthouse. You would still be able to visit a village via link to the 3ds.
Custom Robo. Just a next installment in the series in glorious hd.
F Zero U. An awesome next installment of the futuristic racing series. Besides racing at a million miles per hour with your friends locally and online, the story would feature walking around as captain falcon in between races, getting into fist fights, interacting with other races, etc.
Ice Climbers. An updated version of the game in the same vein as the 3d Mario games. Fighting with the hammer or ice picks, some parkour style rock climbing, could be cool.
Mario sports. Golf, tennis, strikers, and sluggers. Could be one game replacing the Mario/sonic Olympic games series since Nintendo's exclusivity with Sega is over with sonic boom.
Metroid prime 4. Picking up where corruption left off.
Pokemon u. Either continuing the stadium series or a full rpg like the handheld games.
And finally HD remakes of Kirby air ride and super Mario sunshine.