Panel shots:
This RR is almost all old school. The panel surface is simple Masonite screwed into the plywood frame. The frame lifts up with a HD piano hinge. Many folks go to a big box store and get some Plexiglass custom cut deck. Washer head screws hold the Masonite in place. Incomplete in these photos. 1/4" tape colors depict which block, power source and MTH terminal block circuit.
The lower deck rolls out on 22" drawer glides. The slack in the wires is accommodated by routing each bundle straight down through the terminal drawer bottom then loop back up to attach to the terminal blocks. Raising the switch panel or sliding out the drawer does not place any flex strain on the wires or their terminals, the bundle loop simply rolls with the movement like the power control cables on an elevator.
Sorry for curved example. A straight side panel is actually easier to work with.
The deck is coated with decoupage satin clear coat which holds the tape in place.