Firework Crossbows doing Knockback + Crossbow Rocket Jumping

There should be a feature where Firework Rockets should do knockback when shot through a crossbow, whether it's at a player being BLASTED by the impact or wanting to hop large gaps in the sky just by aiming at your feet, jumping, and setting off a firework

A more fancy way of soaring to the air, easier to climb mountains without having to dig blocks, getting out of a bad situation, escaping holes, blasting unwanted guests away, and a little nod at TF2 again