Personally myself, if I had the power and money to develop an existing IP or more, I would be very ambitious and choose...
F-Zero UX: A new storyline and direct sequel of F-Zero GX. It will have remastered and improved existing tracks, amazing new tracks, High quality and detailed F-Zero machines, 30 player online, improved steering and control, breath taking effects and background detail, and a greatly improved create your own machine and a new addition, create a racer.
StarFox Ultimate: Amazing story with the existing cast and new characters. Impressive aerial gameplay and control, amazing but limited ground missions, and an immersive multiplayer mode. Best of all, StarFox in full HD!
Midnight Club 5: Great variety in cars, customize your character, impressive soundtracks, highly detailed cities and race tracks, great narrative and story, and 10-20 player online.
