Some things rest more easily on the eye than others. To myself and several others the signal box sign was ok. To SM it was slightly large. I wouldn't pick up on the slight difference in the fourfoot or sixfoot but I noticed the downpipe.
Overall the quality outweighs the small blemishes.
Maybe a scenario could be staged near the box. 2 workmen and a lookout, are about to replace the signalbox signage.
I wonder if any modellers replicate railways correctly? Build the scenic part first and then construct the trackwork onto it. Dynamiting polystyrene, chicken wire, plaster rocks etc to lay a track bed.