@geysergazer, nice layout!. Ya, unfortunately, I can't remove the door as this will double as my office and I need the privacy, and removing the closet isn't in the cards either.
@Mark Boyce, nice design. is this layout completed or in construction? If it's up and running, could you post a few pics?
After reviewing the suggestions so far and looking at some other layout plans I made some modifications. The Circle in the middle of the room is my desk ( just me and my laptop) and I added a Roundtable on the bottom right-hand side.
So, given my constraints, I think I hit most of my wants:
Mountain with tunnel
Small switching yard for accessories
Bridge
Roundtable to turn locos around
Decent size
If anyone has any thoughts or suggestions please let me know
Thanks!