The boards are made, they look great.
I'll be shipping them out tomorrow for those who have paid.
I tested the 10mil fuse link, but to my surprise, it passed 5 amps (the most my bench supply puts out) but did not blow.
It did get hot, but not enough to burn my finger. I'll try it later with a SLA battery, to see where it pops. I don't know much about fuse building, my guess is the length of the conductor has a role to play, but for sure this link will blow before it damages the trace.
Here's a pic of the board (IMSAI 8080 not included).