I'm happy to say that I accomplished the following:
• Discovered how to boot Mojave on a Penryn-based system (refined by @jackluke as described here)
• Enabled graphics acceleration on nVidia Tesla systems with a dumb hack, and later a less dumb one
• Fixed iSight camera on some MacBooks
• Fixed communication with Arduinos on old USB hardware
These fixes have been incorporated into the patcher. It's been an honor to help such a legendary developer, even just a bit. I learned a lot -- and I'm ecstatic that my old MacBook now has dark theme.