For the WiiU, Do similar to Skyward Sword, but just tweak it slightly:
-Add more dungeons (8/9)
-Increase difficulty further/add difficulty options
-Make the overworld an overworld, which you can walk to any point in it.
-Add more towns and sidequests, with actual rewards
-More puzzles please!
-More fighting please!
But make sure you keep the fighting style, and the overworld puzzles (perhaps not quite as long, even if the Sandsea was AWESOME!), the cool minigames, the boss fights, the story, the length, the dungeon design (Sky Keep was cool) etc.
The game is very good, but it could just be slightly better. Maybe add HD graphics like in the demo as well for the WOW factor.
For the 3DS, make a game like A Link To The Past, but in 3D. Maybe a 3D overworld with 2D dungeons would be nice. Or just remake Majora's Mask and ALttP.
