The greatest pilot from video games will be a sure thing. However, I think it's more important that he sees an appearance before the next Smash Bros. game. I absolutely hate all racing games, and even I enjoy playing some F-Zero. Sure, a lot of people prefer Mario Kart, but there's plenty of people who still prefer F-Zero. The characters are cooler and more adult-like, the plot's way better, and overall it feels much cooler racing in a futuristic spaceship than a beat up comical go-kart. If Nintendo fails to release an F-Zero game for the Wii U and 3DS, they're going to lose a huge fanbase who will most likely just go for the Playstation or XBox racing games. After all, both consoles have WAY better graphics than Nintendo. It would be stupid not to release an F-Zero game for Nintendo, primarily because everyone loves anything with Captain Falcon in it just so they can all scream "Falcon PUNCH".
I don't think a single thing should change for the Captain. He's got a perfect and fun moveset. The only thing new Falcon-related to hope for is him losing his clone, Ganondorf along with gaining a new character or two from the series.