When I look at the OP’s layout, I see the opportunity to run it similar to a real railroad.
The turntable to turn the locomotive around.
The drive-through yard is the perfect location for a switcher to move the caboose to the other end of a freight train. You could build a full train out of that yard.
The long winding spur would look nice with a switcher slowly pushing a freight car or two to the factory at its end.