I'm pretty sure this has already been noticed, so don't flame me too badly.
Instead of turning around for a RAR, if your button configuration is set to c-stick specials and you press the direction opposite of which way you're running, you'll jump backwards instantly, which can lead into a bair if your fair sucks.
Lucas's "zap jump" where he PK Fires and jumps at the same time will also work if he jumps and throws an item (with A) at the same time.
Not sure how useful all this will be.
Instead of turning around for a RAR, if your button configuration is set to c-stick specials and you press the direction opposite of which way you're running, you'll jump backwards instantly, which can lead into a bair if your fair sucks.
Lucas's "zap jump" where he PK Fires and jumps at the same time will also work if he jumps and throws an item (with A) at the same time.
Not sure how useful all this will be.