Stick it out like the Gamecube era.

Seppuku...

I'd maintain the status quo. I don't know the first thing about business, or Nintendo's operations. So whatever Iwata's doing is, most probably, better than what I can do.

In the shame of Defeat I would fall on my blade as I look upon the trees blossoming.

Retire and give the company to a competent young mind.

Like me?  But I am also Iwata.  The thread title says so.

If I was the President of Nintendo I would...
-Amp up the Advertising/Marketing department and that focus more on ALL type of gamers with catchy phrases like Wii made this for U or What are U waiting for?
-Host monthly Nintendo Directs with what to expect on Wii U and 3DS
-Update the Wii U's and 3DS's interface, browser,and MiiVerse
-Update customization of Miis
-Localize popular Japanese games such as Monster Hunter 4 and make a MH4 HD port for the Wii U
-Release at least one retail game a month to avoid droughts
-Invest in Western developers to release dormant games like StarFox, F-Zero, Eternal Darkness, etc
-Have conferences and try to bring back support from willing 3rd Parties
-Make Nintendo Network ID less cumbersome and fix major problems on it
-Invest in some 3rd party exclusives
-Create an revolutionary FPS game on Wii U to hype up the "core gamers" and make all new IPs targeted to many demographics
-End production of the current Wii U Basic and Wii U Deluxe and redesign the Wii U's appearance and add 250GB of memory for $299, a new SKU with 64GB and without the Gamepad for $229
-Make sure all our development studios are occupied making games
-Focus more on the "U" and less on the "Wii" when advertising on commercials, game boxes, and the console boxes

Is all this too ambitious?

Get a FULL Pokemon RPG on the U (no spinoffs) with a large marketing budget. Nintendo should create a new IP that is a fully "Mature" style game and not one that will get abandoned after the first title. Work with 3rd party developers on porting their "New" games to the system; create a team specific to helping getting the ports coded. Create a better system for digital games - have them tied to an account, and not specific to the system. Go overtime on getting more games in the digital space for the Virtual Console.

They also need to put in advertisement how the Wii U isn't an add on for the Wii, but a completely new system - even if they have to use the dreaded "technical" words.  3X more powerful than the Wii, things like that will give people the realization.

1. Allocate 10 million dollars for the funding, development, and marketing of Mega Man Legends 3 on the 3DS as part of a collaboration with Capcom.
2. Allocate 100 million dollars to fund, develop, and market Shenmue Complete Saga for Wii U in partnership with Yu Suziki and Sega.
3. Step down as CEO.
4. Play Mega Man Legends 3 and Shenmue 3.

-Release 3DS/DS player for WiiU (requires Gamepad) for this year
-Firmware update to make WiiU fully compatible with Pro controller only (i.e. no gamepad required/hell with the games that require it at this point[up to devs for compatibility update on those particulars])
-Pro controller WiiU SKU for $249
-Gamepad retail for $129 (Requires WiiU for setup/function obviously)

Ensure Bayonetta 2, X, Yoshi Yarn, and Smash Bros WiiU release this year. On top of those, also for this year:
-Super Mario Sunshine HD
-Luigi's Mansion HD                                                                                                                                                                                                                                                                      ---transition Pokemon remakes to home console---Pokemon Emerald remake for WiiU---

Return to E3 and focus presentation for WiiU 2015 titles (of course give spotlight to some above yet-unreleased titles)
The following for 2015:
-Hyrule Warriors (Early 2015)
-Paper Mario WiiU (first half 2015)
-Starfox WiiU (first half 2015)
-Kirby WiiU (summer 2015)
-F-Zero (summer 2015)
-*Pokemon Yellow Remake*
-Metroid WiiU (October 2015)
-The Legend of Zelda WiiU (November 2015)
-Super Mario (Galaxy 3) (Novermber 2015)


---

-Price cut 2DS/3DS consoles ($119/$149/$169)
-Pokemon Z
-Pay Capcom for Megaman Legends 3
-TLoZ Majora's Mask 3D

Edit: some stuff.