very nice i like the variety different of trees you have

As someone who is not a train guy and also have only done a few layouts, I found it useful to research classification yard and marshaling yard designs and reasons for lead lines, run-around lines and drill lines. Especially with your busy mainlines, you need lots of extra track for operations that don't interfere with the main lines. I like your work, just suggesting stuff I have also recently learned

Sidings are already on the map and should be plentiful though.