Robert
Reverse Engineer
This was designed for a specific application, but there's no reason it couldn't be used for a 64-in-1 build.
Looking at it from that perspective, I could see one rotary switch controlling the type of effect (Delay, Reverb, Modulation, Pitch, Filter, Envelope, Spatial, SpecialFX) and the other to select an individual algorithm from that group. With that approach it wouldn't take long to fill up all 64 slots.
Two of those side-by-side would cover a lot of bases.
Looking at it from that perspective, I could see one rotary switch controlling the type of effect (Delay, Reverb, Modulation, Pitch, Filter, Envelope, Spatial, SpecialFX) and the other to select an individual algorithm from that group. With that approach it wouldn't take long to fill up all 64 slots.
Two of those side-by-side would cover a lot of bases.