Don't you need to know whether the site is suitable to dumping a body without being seen. How close is the nearest house? Is there vegetation or water....etc.
Again, this speaks directly to my point. None of the things you've listed, vegetation, water, etc... can be adequately determined using Google Maps. Enter your own address in Google Maps and you'll see what I mean. It's not in real time, the resolution is not there, etc... You could be looking at an image that may be days, weeks, months, or even years old in some cases. Remember also, that this was a housing development under construction. The look of it changed almost daily. Nobody in their right mind, or even a homicidal mind, would pick a place to dump a body based on a Google Maps image. I fully agree that this is suspicious behavior, but it is greatly devalued as evidence IMO, becasue the prosecution didn't offer some some sort of plausible connection of the behavior to the actual crime. Does anybody know if the defense did a demonstration of Google Maps for the jury? Becasue I would think that if they had, it would have pretty much neutralized this as evedence altogether.