backing (wish it were brick built)
Backing is a pretty standard RR modeling device. For Lego train builds, I don’t really like it, especially non-brick built. That said, Greg’s Alpine Village backing was awesome and if we could put together that kind of brick built detailed backing, that could work well for our smaller displays (where we need to visually separate different sections* or displays against a wall (where the backing hides the wall).
*This display does use a mountain and tunnel as one visual separator. Walter’s mech bay wall also served a similar visual function at November’s Greenberg’s display, separating the mech bay from the winter village area (but still connected by the monorail).