Shawn,
Let me say this is busier than I like as well. When you say “before” I am not sure which before you mean since there have been so many . . .(http://largescalecentral.com/externals/tinymce/plugins/emoticons/img/smiley-wink.gif).
For this newest set of plans that are in this thread and not previous threads, the idea is a shift to operations. So one of the big space robbers is that wye and yard. The prototype I am trying to mimic, not represent fully, used three wyes in its operations to turn locomotives. So having a wye is fitting and adds a fair amount of operational interest. This layout will have three grade separated crossings (everywhere the track crosses is grade separated by at least 11") and in addition there will be other tunnels and bridges throughout. I might even attempt a grade separated double trestle where the creek is.
Now for the continuous run, it is not a loop I abandoned true loops long ago, is a run with a reversing loop at each end. If you start in the lower left there is the lower loop which will be 15" off the ground. It then travels on what I am referring to as the noodle which crosses the space at about the mid point and has a walkover path then continues right and forms the inner curve at the far right and then traverses left and then again crosses the center of the layout then heads right again to where it reaches the upper reversing loop which ranges from 28" high to a max height of 30". Then completing that loop it can wind back down again. That’s the continuous run. Flop switches will be use on the loops for automatic switching to allow continuous runs. For operation then the trains instead of coming back down the noodle can instead go into the wye and yard area for switching.
The noodle is not at all ideal. In fact the very first design in this thread required a person to cross the track way to much. This one is an attempt to eliminate as much of that as possible. I am down to three. The main reason for the noodle is to gain elevation at a reasonable rate and that takes track. In my space that track has to wind around. Again not ideal nor what I really want or like. But it is a trade off because I like vertical separation.
Speaking of vertical separation. You achieve vertical separation in a couple of ways. First physical vertical separation, and perceived vertical separation. I am not sure how it will all all transpire and I am sure much of it won’t be determinable until I actually stat landscaping but I hope to create view breaks that allow for distinctive “areas” that will have varying topography so that I appear to be climbing more than I really am. Its a small space, I have to be realistic in my hopes. I might employ some cast rocks and artificially built necessary to aid in this. Plantings are very secondary. This is a layout that will have plants and not a railroad in a garden. Plants will go where I can make them fit but there will be plenty of space for it.