Love it.

I wonder if they could have made the disk support work better by producing an interposer board to turn the (much simpler) Apple Disk II drive into a 1541, rather than butchering a 1541 to go the opposite way.

Adrian Black found that the 1541-compatible Enhancer 2000 was essentially that, right down to having a pin-compatible Disk II style interface internally. He tried using a real Disk II with the Enhancer's logic board, and had some success using it as a C64 drive: https://youtu.be/zGm5Jvo571g?t=5780