No offense, Jeremy, but I don't like it. Partly because our bus is low, and I don't want the world looking in. Partly because all those windows take up so much valuable wall space. Mostly because that much uninsulated glass is a nightmare during cold weather. We barely survived last winter in our Gillig even with most of the windows insulated and covered on the inside. To be fair, other areas of the bus, including the floor, were not insulated, but I am of the "put a few thermal pane windows where you need them" school...
But of course, different strokes.... I'm glad everyone is free to convert in the manner they see fit, and — again — I love to see what folks are doing.
Jim's post brings some things to consider to mind.
First, the heat load and energy consumption of artificial lighting. With incandescent lights -- and fluorescent lights -- for 8-9 months of the year, the heat to produce a given amount of light from artificial sources is greater the the heat from sunlight. And then you also have added expenses to make the power to operate said lights and the air conditioning to combat the the extra heat. LED lighting is a huge win here.
Second, Many RVs of all types, not just bus conversions create wall space that begs for some sort of decorative art. I prefer the ever changing natural scenery a window brings. The flip side is that "ever changing natural scenery" is in short supply in parking lots and close packed RV parks.
Third, a personal quirk is that I feel safer when I can see what's going on outside.
Last, I see nobody paying attention to the important issue of fresh air exchange. Your body burns O2 and puts out CO2 and after a while there is not enough O2 without fresh air. When you skin over the old windows and put in a few new windows that seal tightly to keep the cold (or heat) out, after you've spray foamed over all the seams inside, what are you going to breathe. Architects and HV/AC engineers have to meet standards to insure breathable air yet nobody seems to give it a thought here.