As I mentioned, I have 3-4 wedgehead pinball machines (El Dorado, Abra Cadabra, and Jacks Open for sure), plus the awesome D&D pinball machine complete with dragon-themed topper. There will also be 3-4 wrecked pinball machine models to scrap for parts, plus a junked version of the change machine.
If I can figure out how to do electrical blocks correctly, I'll probably make the working arcade machines as switches, which would allow people to hook them into a power grid, switch them off and on, and other fun stuff. It would also allow me to (in good conscience) remove the battery requirement from the recipe for each if you have to worry about wiring them into a grid.
Almost done with a major commitment that'd been eating into my modding time (not marriage, another one), so watch this space for news and updates on the A21 version.