I like this idea. You could keep the scenic break (is it a bridge?), but also make the front half of the Mallow Junction board scenic for even more viewing appeal

Yes if you look at the first photograph, you can see it and it's very close to the junction. When a Trelee train reverses and the pulls forward to Trelee to continue it's journey

The front of the locomotive sticks out from under this bridge, whilst waiting at the junction signal.

Eleanor