First, fix the bug where half of the perk applies to all equipped guns instead of just the one it's on. Even then, I don't think an alternative Field Prep but for jumping is a good idea simply because crouching is near instant and lowers your profile, but jumping to reload is a full second spent outside of cover. I think, instead of a reload speed boost, it would be more interesting if the perk allowed the weapon to be fired mid-flight like Heat Rises, Lion Rampants and Bows on Hunters do. You're already giving up a lot of aim assist for using it in the air, but I think this would more than match that kind of trade-off. It would turn this dismantle-on-sight perk into a good option (Could remove the bonus reserves part to balance that out, doesn't match the theme anyway). P.S. I actually just really like shooting while flying, so even in vanilla d2 I picked the less meta solar tree instead of the near infinite dawnblade, and I really want that in prismatic - so a gun perk providing an option would be really cool.