Considering "Charged with light" is a viable build and has numerous mods to help amplify it. Removing masterwork weapon orb generating would completely ruin any charged with light build. Couple that with the fact master weapon orbs really only happen in PvE, it would also make no sense to change the mechanic. Include the fact that any weapon orbs picked up give a very small amount of super energy. Weapon orbs are not a mechanic that can be abused, or at least i haven't seen a player able to abuse it. If they end up changing the orb generating mechanic it will only be to make things harder for players in PvE. As someone already said, its not a mechanic that needs to be addressed. Its not breaking any thing and there far more abused mechanics that should be looked at first.