First off, no, jumps are used for much more than just recovery. Jumps are also required for dodging projectiles, following up attacks and load of advanced techniques.
Let us a take a situation: Capt. Toad used an Up Smash, and the character gets knocked far enough upwards. What is he going to do then? Sit like an idiot waiting for the opponent to come back?
Or take another case: Falco starts lasering him. Without a jump, he can only shield for so long before he gets trapped by the stun and HE CANNOT ESCAPE IT BECAUSE HE CANNOT JUMP.
Or ROB places a gyro on the ground: He cannot get past it without hurting himself. See where this is going?
I repeat, not having jumps is a
terrible idea for a Platform Fighter like smash. Unless you give a good work-around, I'm not moving from my position.
True. Robo burner is laggy and is unwieldy for general purpose, but it kind of works, I guess.