Quite a lengthy thread, so do pardon if any of the following have been wishlist suggested before.
1. A common feature until modern image era, a gasometer assuming it pragmatically possible? Can't envisage how the supporting external girder structure detail could be rendered with sufficient suspension of disbelief in card, or if it even could be? One for John W's talent to advise on I expect.
2. Although we already have the half relief versatile Odeon/Woolworth high street buildings, I would love a half relief cinema in the art deco style similar to the Cheltenham Gaumont Palace in its heyday as Kingsway have recently added to their product line.
3. Also missing is a pre or post nationalisation era fire station to accomodate those wonderful Leyland TLM, Dennis F12, and AEC Regent III Fire engines by Oxford Diecast and Corgie. Half relief in the art deco style (Kingsway) or full build small urban local county style.