OK, here are my suggestions:
1. It's [ almost ] always a good idea to go with the largest minimum main line radius you can. From the plan it looks like the left side is not quite as wide as the right -- is that correct ? Can both sides be brought out to the same maximum ? If so, I would make that dimension govern the main line radius.
2. Make the lift bridge section parallel to the 30 ft dimension and have the main run 'straight' across to the other end curve. As a result of this the coal mine area is now located off the main; it would be reached by a 'branch from the town at the top, with a tighter radius of course. While the main at the right side is mostly in tunnel, the branch is mostly visible except for a shorter tunnel. The mine trackage would be flipped 180; the conveyor can still be laid out as is, as the branch could continue [ or maybe did continue at one time ] farther up the valley, or "hollow" if you prefer.
Increased operating interest "requires" that coal trains change direction in the town, too
3. It seems a shame to have so much "table space" devoted to staging. So let's take the staging "on stage" and make this a yard, with perhaps two through tracks and the rest stub end, switched from the left. Add a 'dummy' track coming in from the lower right, and this is [ also ] your interchange yard with the XYZ Class 1. You now have a number of options:
a) You can build an interchange consist on a through track. Sometimes "during the night" the XYZ comes in and exchanges the inbound for the outbound cars there.
b) If you have some XYZ power, or desire some, your crew can put the power on ready for the XYZ crew.
c) The transfer to the XYZ can be made your your road's power. The nice thing about this scenario is that when the xfer job returns, the crew goes off duty, but leaves the power on the train. Instant prototypical staging at no charge. Another crew then sorts the incoming train and builds eb and wb [ or whatever ] trains.
If you have, say, runthough coal trains the XYZ or pool power stays on; again, prototypical. You get the idea.
4. I'd build the coal mine, town, etc as "structually removable sections", eg, quasi-modules, so if/when you move you can salvage some work. { It usually never works out that way, but it's a thought !] Give the coal mine and staging area their own backboards [ which are back to back, of course ] to facilitate this.
Those are my thoughts -- YTMV, and it's YOUR railroad.
Best, SZ
