This is one of the reasons that having the Mega Bezel manage it all is ideal; it reduces the complexity of your setup because you are only using the shader system.
Even if you aren’t using wildcards you can have only one preset file to point at 1 image file, and this can automatically place the screen size/position, and show the image. With no cfg files at all, this makes it much easier to manage.
If you have a number of similar graphics (E.G. Arcade cabinets) then you can use the wildcards and have even less files to manage.