Still, I think Air Ride lacked options (like which powers appear, City Mode level gains, car customization, track customization, and track options), game modes (something like a Mario Circuit would be sweet; also, a "trick" mode, like a Tony Hawk game), more vehicles (there were what=??? 12 dozen. And Meta Knight and King Dedede were literally just 1 vehicle. They should make like at least 60 in a sequel), and I think the gameplay was too simple for its' own good (there should be more forms of boosting at least IMO; like 3 different "levels" of boosts).
Regardless, I would love a sequel, and I would love to see a lot more of all of that stuff, plus better vehicle balance (that hard to control pink vehicle needs to go faster). Imagine a Kirby's Air Ride sequel with all that stuff, plus new graphics, the option for more racers (up to say 20 or so, instead of merely 4), and of course a really decorated and unique online multiplayer.