Hmm i think in a normal race this could be balanced, and actually interesting. However adding more movement options, like air control and manuel jumping will require more driving skill, which isnt bad, but will reduce the focus on the high speed wall riding, which is the main feature of the game. Especially new players will have a even harder time getting into this game with new mechanics like this.
E.g. aircontrol, is nice to have for skilled players, but for new players it´s just another option to mess up their landing. Thinking of Distance a good implemented Air control in a racing game is quite difficult because in air you have more movement directions and rotations than on the ground, which could be quite confusing if you re not used to it. So in the end the speedster class, which should be the easier one to drive becomes much more difficult.
Im not saying these are bad ideas. Actually they could spice up the gameplay quite a bit. Im just not sure if its really necessary to make the game a better player experience.
Balance with these new perks is already off, depending on the game mode. In the parkour mode the jump button or aircontrol could be really good. In Arena the tank is the best pick with 3 power ups.