Atlas N-501 Trackplan

Poppy:
If you are comfortable eliminating the interchange on the right, then I'd like to revisit the idea of a double-ended arrival-departure track because I believe it will yield a considerable improvement in ease of operations (and ultimately in satisfaction with your track plan).

Suppose you tie the left end of the A-D track in at 9:00 on the oval with a left hand turnout (TO1) (curved track to the main and straight track to the A-D track).

At the right end of the oval, at about 4:30, you position a right hand turnout (TO2) (sort of mirroring TO1's curved portion of the turnout to the main and straight track into the yard).

The straight portion of TO2 connects to the curved portion of a left hand turnout TO3. The straight portion of TO3 sort of aims toward the upper right corner of the layout and crosses the space formerly occupied by the interchange track. This track will provide a yard lead. The curved portion of TO3 goes to the main.

TO4 is a right hand turnout that ties into the base of TO3 with the straight track of TO4 pointing toward the yard and the curved portion going immediately into the straight part of the A-D track as it runs parallel with the main.

TO5 is a right hand turnout that forms the 2 yard tracks that run parallel to the main and A-D tracks (and curve away from the front edge of the layout to stay parallel with the A-D track as it curves to tie into the main at 9:00).

The engine facility could stay where it is, but that shortens space to use on your front/bottom yard track...so you may want to consider putting the engine facility along the yard lead between the main and the yard lead accessed by a left hand turnout TO6. That way, a switcher classifying cars on the 2 yard tracks or building or breaking down a train on the A-D track, could run from the yard tracks through the straight portions of TO4, TO3, and TO6. To fit the yard lead and engine facility into the same space as the interchange track formerly occupied, you may need to put a curved piece of track between TO3 and TO6, but you could still run the yard lead through the straight portions of all the turnouts. There would be no S-curves through turnouts with this arrangement which will dramatically reduce the chance of frustrating unreliability during any backing motions in the yard will classifying cars.

Having a double ended A-D track will let you pull out of the yard or A-D track going counter-clockwise around the layout, and at the conclusion of your run, pull straight into the A-D track without needing to back into your yard. The locos would be at the correct end of the train to move directly to the engine facility without much fuss.

 

I like how you've expanded the sidings at ADM and Red Wing. If you will have access to the top of the layout, the scenic divider and Sunrise siding will be very nice additions too.

Depending on how much you are willing to crowd things, it might be possible to add a short interchange track outside the oval running straight to the left edge of the layout from a left hand turnout off the main just to the left of the Sunrise siding. This would only be accessible to counter-clockwise running trains if a run-around move was performed using the Sunrise siding. Of course, if you are running clockwise (which the double-ended A-D track will easily permit), then you could serve the interchange without needing a run-around movement. (Unfortunately, the interchange and Sunrise would be the only sidings that could be conveniently served unless you wanted to split your train for an awkward run-around movement at ADM.)

Having 2 tracks at ADM and RWM will give you an interesting operating option: it would be possible to use the track closest to the structures as a loading/unloading track, and the farther track as a holding track. The roadswitcher's job is to pull the loads/empties from the loading/unloading track, move cars from the holding track onto the loading/unloading track, and set out cars from the train onto the holding track. This increases the total number of moves you must perform at any one industry...which, for me anyhow...makes operating a particular industry more interesting (and challenging if you have to pull loaded cars off the end of the loading track but leave an empty one that hadn't been loaded yet, but was closer to the turnout <mischievous grin>).

 

Some thoughts on right-side running on a double oval plan of this size...
I personally prefer the idea of right-side running when two tracks run so close together, but on a door-sized layout, you will travel over most of the mainline to get to the crossovers necessary to get the train on the correct side. Additionally, you will limit which industries you can serve unless you add even more crossovers or only serve 1 or 2 of the 3 industries when traveling one direction...which means increasing the sense of "busy-ness" or crowding in the track plan with more crossovers while also reducing the amount of interesting action any one train can perform.

<Plink, Plink> My $0.02: eliminate the crossovers between the two loops and make the plan a folded loop (twice around the layout to cover 1 grand loop). The yard and A-D track would be on the outside loop but ADM would only be accessible from the inside loop. In the upper right hand of the loops, the outside and inside loops would cross at a diamond. All other sidings would remain as they are presently positioned with minor adjustments to make the twice around loop. From the yard, trains would go on the outside loop and cross to the inside at the diamond, serve RWM, serve ADM, cross the diamond to the outside to serve Sunrise (and maybe an upper left corner interchange by a run-around movement) and then proceed on around to the yard.

To make the run seem longer, you could make multiple circles around the loops and serve Sunrise first by picking up any/all cars but not setting any out, travel over the entire loop x number of times, then serve ADM, travel x more loops and serve RWM, travel some more loops and serve the interchange with a run-around through the empty Sunrise siding, travel some more loops and set out cars at Sunrise. Loop a few more times for good luck and pull into the A-D track.

Lots of action on a door-sized layout.

To heighten the sense of separation between the 2 tracks (which will still be relatively close to each other), some modelers put small trees and ditches or walls between the two tracks to play down the appearance of being double track. They will lay the tracks at slight angles to each other whereever possible instead of parallel, and will separate the tracks vertically by up to a half inch. (If you decide to use this method for this layout, don't overdo the difference in elevation because you will be stopping your train everywhere on the layout to serve the 3 industries and the cars left on the main while switching the sidings will roll downhill if there is any grade at all.)

 

Poppy:
I like your plan with the crossover. I played around with trying to eliminate all the S-curves but couldn't make it work with Sunrise centrally located so I went with this:

The space between the Sunrise runaround and the inner loop track with the RWM siding is not as large as it seems in my drawing...from the 15 degree crossing to the RWM turnout is a gentle S that moves the track over about an inch and a half in a little over a foot.

Atlas standard turnouts (#2750 and #2751) have a 19 inch radius and complete a 15 degree arc. In a yard ladder made with these turnouts, there is about 1.25 inches between track centers. If you use # 5s or #7s your angles may be different and may result in different lengths of sidings or a very slightly different distance between track centerlines in a ladder, but I think the plan can be tweaked to work with the other turnouts without too much hassle.

 

Between plans 8 and 10, I like 8 better. My opinion, anyway.......