Oh this is interesting, I’ll have to give it a try. I’ve got a circa 2005 Intuos3 9x12 that I currently use with official drivers hacked to run on modern macOS[0], but their functionality isn’t perfect (bits of its System Preferences settings pane are broken, mainly) and presumably the hack won’t continue to work forever.
[0]: https://github.com/thenickdude/wacom-driver-fix