What an outstanding project! This is currently my favorite thread! I've done a few complete restorations and shared the progress on Pinside, but I've never had the guts to go "outside the box" like this. This is amazing!
I know you mention in your first post that this is your personal therapy and enjoyment, but seeing the type of custom work that is being produced here got me fantasizing about how cool it would be if there were a business with a full crew doing custom restorations in a timely manner. Custom artwork on cabinets, coin doors, aprons, and playfields per the customer's request. Alternate translites, alternate plastic sets, and custom mods as part of the package. Although very expensive, after seeing projects like this HSII, I'm sure there are guys in this hobby who would pay through the nose for custom games. I doubt I could ever afford to pay for that type of service, but it would be cool to see within the hobby.
Sorry, just daydreaming a little. Can't wait to see more progress.