Overall, I like it! You did remove the staging area for the coal mine, and with current design that same staging track can be used for the lumber yard. Its not needed, but if you have the track, go ahead and do it. It could make things much easier for you later.
Speaking of "if you have the track", you said earlier that you were making a list of parts still needed. May I suggest using a few pieces of flex track in the areas of 1) top left blue track where there are a number of small sections to achieve the curve needed, 2) bottom of inside red line where again there are a few small sections, 3) yard tracks. The reason I say yard tracks is because if the yards are loaded up, it will be difficult to not only see if a car is derailed but also difficult to rerail. By using flex in these areas, the opportunity for derailments are severely lowered, therefore lowering the chances of needing to see or fix derailments. Of course, use your sections first. I know someone suggested selling your own stock, but if you have it, use it. I see no need to spend a bunch of money to replace what you already had. You had a pretty nice layout before, so I trust you know what you're doing with sections.
Build it! I look forward to following along!