We all have 'phases' - I know I have, and only recently rekindled my dormant passion for railways.
Layout looks really nice - a lot of effort has gone into it I can see.
I have in mind to fit the 3rd rail to the two main line tracks - this will allow some other stock to be used. I am in the process (very slow process) of creating a cliff in the side of the tunnel, but other things have kept me away from the layout. BB
Main line - https://flic.kr/p/JaCWzD
Cliff face - https://flic.kr/p/NkHUow