1. Buy Platinum Games
2. Buy Sega
3. Buy Square-Enix
4. Buy Capcom
5. Buy Namco-Bandai
6. Buy Ubisoft
7. Buy EA
8. Buy Activision
9. Buy Sony
10. Buy Microsoft ... well, if i think about it - there will be no need anymore^^
10. Let them all make games :D
To be honest:
1. Buy some studios and expand your own to be able to launch the Next Generation with a monster exclusive Lineup within the first year. I am talking about at least 1 game like Metroid, Zelda, Mario, MarioKart, Pokemon, F-Zero, Starfox, Pilotwings, WaveRace, ExciteTruck, SmashBros, Kirby-Game, DonkeyKong, X ... per Month. Launch in November: 3 for Launch, 2 in December, then 1 for January-Oktober, 2 in November and 3 in December = 20 Games within 1 Year!
The WiiU, in my opinion, can never ever be saved anymore. Nintendo should not put too much efforts into it.
Oh well, i just found one other point.
2. Increase the VC-Games output drastically (i mainly mean GCN/N64 games) AND lower their prices to acceptable amounts and give us special deals and sales during the whole year (like Steam). The games are, in my opinion, much too expensive. Constantly 1 GCN-Game + 2 N64-Games + 2 SNES-Games + 3 NES-Games + 2 Other Indie Titels per Week should do it within the first year. Later replace the 3 NES-Games by more Indie Games.