N-scale?

[Brakie]

Hi Justin,
do you have a reason to stay away from more ambitious plans?
IMHO you do not need the passing siding at the top anymore, when you have that staging yard extension.
Might be a matter of taste.
Have fun behind the drawing board.
Paul.

Paul,If I may..

One thing I have notice is less is best with N Scale when it comes to designing a HCD layout since the door is small piece of real estate and one needs to leave room for scenery and such.

All three of my past HCD layouts had a yard and engine service area on one side and a industrial area on the other side and had urban scenery instead of your normal layout scenery.

That top passing siding can be use to hold a train as another leaves the staging area-adds a tad more to HCD loop operation.