Hopefully these sell well enough that it's worth your effort to make them! It's certainly, IMO, something people look for in restoring games. With Pinball Rescue ceasing production on their decals it now has left a hole in the apron restoration field.
When you first announced HS as your choice a part of me was questioning as to why you would pick a machine that was a highly produced game thus there would be more aprons out there for people to pick from for those restoring a game. I would think games like Fathom, Medusa (yes still pushing for a Medusa) and other popular low production games would have more of a demand as there would be less of an opportunity out there to get one in excellent condition! I guess it could go with way in the sense that higher produced games gives you a larger audience.