What if Diddy Kong Racing and F-Zero are going to be major Mario Kart expansions?
The F-Zero stages could just be testing the water to see how open their fan base is to a crossover racing game!
The F-Zero expansion could be Captain Falcon (and maybe other Nintendo space characters like Fox or samus) and friends, with new karts and tracks, and same with a Diddy Kong Racing style pack. F-Zero could all be antigravity where DKR tracks would focus on glider and underwater stuff.
That seems like the most logical reason why Captain Falcon still isn't a racer, and why Diddy is mysteriously absent. It's either that they both are getting new installments soon, or Nintendo is building up to have them be the frontrunners of dlc season 2
Not that rolling all the nintendo racing IP's into one is my first choice, but it'd be a hell of an answer to sonic and all stars racing!
Isn't the most common rumor why Diddy Kong is absent from both Mario Kart 7 and 8 that Monster Games has developed a Diddy Kong Racing 2 game for Wii U?