I just said that, that was the machine I was looking for. I want a machine with those features, but it isn't necessarily going to be the Dell. Whatever I can find that has all the same features, or better, for a decent price will be what I get when the time comes. Only thing about the Dell is the convenience, (call up, tell them what you want, pay, and a few days later it is at your door). I have never tried building one myself, so I am not sure about that, and when you price them out down here on the Gulf Coast of Florida at some of the computer stores that will build them for you to your requirements, they actually make Dell look cheap. Seems like down here, with the largest percentage of people over the age of 65 than anywhere else in the country, they are always out to rip someone off, feeling that the people don't know any better. In most cases they don't, and a fool and his money are soon parted.
Now, to the main part of this post.
Kevin A. may not like my terminology here, (because I am going to refer to model railroading, but in this case it has a bearing), but in developing Pen Argyl, maybe the "Valley of Decision", (actually the term is Har-Magedon and according to one of my Bible dictionaries it means "Mountain of Meggiddo", which was 56 miles north of Jerusalem and sat on a hill where five trade routes came together, [who says theis forum isn't educational?]), will be that you use some of the processes used over in model railroading, especially pertaining to either shelf layouts or items located back near the backdrop. What you could possibly do with Pen Argyl, now that you have it mostly laid out, is to use some artistic license, (and to be truthful, while I am from that general vicinity, I have never been to Pen Argyl, even though I have passed within a few mile of it from time to time), and add a few small hills not to far back from the tracks that the roads would just sort of disappear over. In more congested areas of town, perhaps the roads could pass between two buildings to a "T" intersection, which wasn't necessarily there in real life, and turn either way to disappear behind the buildings, or simply they could just turn behind some trees to disappear. Whatever way, the area near the track that most pay attention to would be just as it is in real life and when we get away from the track we get the impression of more being there without really showing it, thus keeping the density down, the typical model railroad "just over the hill" philosophy.
The main thing here is that the feel of the area, that it feels correct. The screen shot below is of Cumberland Maryland and the tracks that are part of the B&O yards on the Sandpatch Route. These are the tracks to the top and right in the screen shot. If you notice, there are many more roads in actual Cumberland than Maple Leaf Tracks included in the route, entire areas of town as well, all of which were left out to get acceptable frame and density rates, but with what they did include, they were able to accomplish the proper feel of the yard in Cumberland and the surrounding roads and buildings.
I am not saying that this is what you should do, but it would at least go a long way towards keeping the frame routes acceptable in such a congested area. Make it easier on you as well, allowing you to perhaps finish just this town within your lifetime instead of three lifetimes from now. In V Scale we are after all building a digital model of a real life scene, and in any modeling project, no matter what the type, there are compromises that must be made. As long as what we are trying to accomplish has the proper look and feel, and is as accurate as possible under the given circumstances, even though it may need to be selectively compressed by lopping off a few repetitious objects, it will be "good enough" and give even a person from that area the feeling of being right and recognizable.
Andre, the work you have presented from your screen shots is a formidable task, and with the satanic way the RE is, maybe you need to heed Jesus' words to Peter when he said, "Get behind me Satan!" (an no fare pushing either), as you find a better way to accomplish the proper look and feel of the area without sacrificing ti integrity of what you are trying to accomplish.