Possible, but the obvious way to do this is for all Exotic weapons (with or without a Catalyst) to have the intrinsic ability to generate orbs on multikills. So this solution requires no change to mods, no new mod features, no using slots in your helmet to make orb instead of ammo finder mods, no sunsetting of Masterworked Weapon orb generation ability, people still using "Charged with Light mods" and charging your Super up by collecting orbs. The real reason Bungle is doing this is to make us weaker so that instead of them making better enemy encounters, they can artificially extend our grind - play time even more. Anything that hinders us and makes it easy for Bungle to implement is a Win for them in their books.