Nintendo's not in the same boat a Sony is though. If they were a sports team, they'd have their superstar players (Mario, Zelda, Wii/Mii franchise, etc.). 

What Nintendo lacks is supporting players to fill out their roster. You can't pump out a Mario game every 4 months.

They need more games to ensure a steady flow of game releases. 

And definitely I think a Soul Calibur game with Link/Ganondorf as playable characters with perhaps a Zelda stage or two, would sell quite well on the Wii U. 

Nintendo fans respond to content that is specifically made for them, that's why Zombi U can outsell Black Ops 2 and Assassin's Creed 3 on the Wii U, Nintendo fans don't take to the same things PS3/360 fans do. 

Tekken Tag is OK, but it really just doesn't fit with the Nintendo tie-ins. They just come off weird. Soul Calibur with Link as a playable character always just worked well, he's a character known for wielding a sword -- putting him in a sword fighting game that tends to center around the mideval era is simply a good fit. 

Skies Of arcadia 2....
I would love you till the end of time Nintendo T_T

What happened to RARE was not Microsoft's intention. They bought RARE for the talent and IPS. But all the talent left and the IPs failed at retail. MS did not happen to RARE. RARE happened to RARE and MS did the best with what it had left. If MS bought SEGA they would most likely consolidate it some to save soem costs but they would probably let Sega run itself as a Japanese base for MS gaming. They would probably slap the SEGA logo on every Xbox product in Japan to make the locals finaly take notice of the Xbox brand. It still boggles the mind that Japanese gamers still refuse to jump on the Halo band wagon of awsomeness.

They should just buy THQ.

Saints Row, uDraw, Red Faction, Metro.

Banjo-Kazooie and Killer Instinct

The Jet Set Radio series: Custom tags via the Gamepad, opening up the game for sand box game play and other legit next gen options seem like just the thing to make this series actually successful this time around.

Shining Force: Making a new addition to the Shining Force series that actually is made by series developers Camelot would be awesome. I can see this having the most success as a download title in the west. Maybe even released as a episodic story.

Beyond Good and Evil 2: Seems obvious, this project could use some help getting off the ground, adding in the Nintendo touch and exclusivity may be just what the franchise needs.

Star Ocean: After the failures of the last two games, I think they could use one more chance to redeem this series so that it goes down in history as more then a Tales of type game that failed to reach the same acclaim.

Skies of Arcadia 2...

Both have a small cult following
Both have ideas for a sequel
Both required funding which nobody else offered.

That would be a foot-in-the-door for the JRPG market, should Nintendo not want to deal directly with Square.

How about striking a deal with Blizzard and getting World of Warcraft and Starcraft 2 trilogy (or next Warcraft RTS) on the console as an exclusive?  Maybe do something new.  Push to make the Wii U THE console of choice for RTS would be good.  Pretty much, don't go just titles, but lock down genres.

Possibly buying Sega would be a good option also.

Some Resident Evil game.

Kingdom Hearts 3.

Sony games once they leave hardware.

Well, Platinum is also developing the Wonderful 101 and possibly more for Nintendo. And maybe it only seems insignificant to you because you aren't considering the history of Clover Studios/Platinum Games and Capcom/Nintendo.