Its a masterful piece of work, and I thank you profusely for completing such a gargantuan task. It has allowed me to return to an era of much, much delight - both in front of and behind the rays.
I would love to see a musashi that is cleaned up; it feels to me that the mame version has mame-specific functions. I am not so sure about it, as I am not so familiar to that codebase.
https://github.com/mamedev/mame/tree/master/src/emu/cpu/m680...
It emulates many more processors from the 68k series, such as 030 and 040. The original library only did 000, 010 and 020.
Note: also correctly BSD3-relicensed