Edit Premiere Presets

They need to add a function where you could edit presets that you've created and then resave them. Let's say you have a camera mounted above your computer and a green screen behind you. You have a preset that does ultra keying, position and scaling, and masking. Now, let's say you bump into your camera and it moves a little bit. Now, all of the position and scaling and masking presets are messed up. This is a perfect scenario where editing and saving this preset would be awesome! Because, now all the future videos, will have the camera in the same spot, too. This addition would be game-changer!  To prevent messing up old projects, the edited preset would only apply to the current project and all future projects.