The primary 'quirk' of the Medalist is that it is a one-off design. Like Rube Goldberg worked with with Fritz Lang to make a camera starting from scratch.
In some ways it is very straightforward- all the assemblies are obvious and visible. But then there are critical adjustments that, for example, involve simply bending metal parts and such. And the order of adjustments/assembly need to be done in proper order (typical but until you catch on it is frustrating in any camera). If there were more of them out there I think there would be incentives for repair people to know them over the years. Given the low number and low usage, it's not going to be a camera most people have seen and opened up. And once you open it up, it's like dropping into another universe.