What they really need is
Yoshiaki Koizumi to work on a Wii U game. That guy is the greatest developer Nintendo has right now; forget Miyamoto, forget Aonuma, forget Sugiyama,
KOIZUMI is the real deal!
Let's take a quick look at his many accomplishments. Not only did he contribute to Super Mario Kart, Super Mario 64, Yoshi's Island, and Super Smash Bros, but he also single-handedly wrote the story for The Legend of Zelda: Link's Awakening, considered to be the greatest story ever on a handheld video game. Soon after that, he went to work on The Legend of Zelda: Ocarina of Time, where once again he single-handedly came up with the idea of the "Z-Targeting System", which has become a staple in the Zelda franchise and many other third person games. He also contributed to the story and character design of Ocarina of Time, considered to be the greatest game of all time.
But his accolades don't stop there. Impressed by his work on Ocarina of Time, Nintendo gave him an even larger director role in their next Zelda game: Majora's Mask. He came up with the idea of the "Three Day System" found in Majora's Mask and also wrote the story for it, which is considered to be the deepest and darkest story of any Zelda game ever, and also considered to be one of the greatest stories in video game history.
After that, he went on to direct Super Mario Sunshine and co-direct The Legend of Zelda: Wind Waker, both games were radical departures from their series norm. That would be the last we see of Koizumi when it comes to the Zelda franchise, which is TREMENDOUSLY UPSETTING because I'd rather have him developing Zelda than anyone else. After Wind Waker, Nintendo banished Koizumi to the Mario franchise. But never known to succumb to mediocrity, Koizumi pulled two more rabbits out of his hat: Super Mario Galaxy and Super Mario Galaxy 2. He was the main director, game designer, and story writer for the first Mario Galaxy, and often got into arguments with Miyamoto because he wanted to include a deeper story into the game but Miyamoto wouldn't let him. Koizumi was so intent on including a deeper story, that he stayed in the Nintendo offices until after everyone went home and (once again) single-handedly inserted the Rosalina story into the game without telling anyone because he was afraid they would reject it. SMG and its sequel, which he produced, have been recognized as two of the greatest Mario games of all time. I also believe the first Galaxy has one of the highest average review scores out of any game ever, along with Ocarina of Time, which Koizumi also worked on.
Recently Koizumi has produced Super Mario 3D Land for the Nintendo 3DS, which I've heard good things about. But I'd much rather Nintendo stick Koizumi into larger, more complex console games, such as the next Zelda or Mario for Wii U. His story writing is second to none.