Not shown in the diagram and slated for the near future will be a logging line and a ceiling line encircling the entire train room.
Given the size of the layout room, are there any plans to have the ceiling line connected to the main layout?
While I imagine such a thing would not be accessed frequently, but it might be invaluable to be able to swap trains on such a loop without having to physically carry them up to and down from it.
I'm assuming that vertical clearances are planned to accommodate modern equipment such as double-stacks. I know the NJ Hirailers have places where unmodified stacks cannot go, although I think that's due to parts of their overall setup containing pre-existing layouts than any design flaws.
---PCJ