All good comments, John.
So often we get asked about illustrations and how to improve them. The user thinks we have software tricks - ways to tweak ArchiCAD/LightWorks/Whatever to solve the image. Well, we do, but that is not the problem.
Usually, the author of the work doesn't know his [people who attend my seminars know this already] STORY.
He's got a building. There it is. But.... there's no "story." He hasn't addressed the setting of the story - time of day, quality of light, the context [cars/foliage/people].
Once you begin to assemble a story around a project - your images of that project get better through understanding.
For instance: Why would anyone put their entrance in shade? Or block the view of the front door? Or place distractions in the image. Or fail to cover building flaws with trees or entourage? Or pick an un-natural viewpoint?
I once coached an ArchiCAD user with a four story brick building to render. In the end, there was one strip of the articulated facade - and only one - that was visible in the rendering from top to bottom through a gap in street trees. Like an exclamation point, it stuck out as a vertical element in an otherwise contained and neutral composition. This why why you add the chickandthedog billboard on the sidewalk in front of that error- not a building error, a compositional one.
The irony is that often our story is the same overandover. A fine tract house with design excellence but still marketable. A fine example of the right hand giving and the left hand taking away. They all want the same thing. But just like buildings are "designed", so are images of buildings - Our colleague Robert Mariani has produced some fine exteriors of a shingle style project that just projects the smell of old leather, dancing cornstarch and floor wax [a good thing].
My answer is to experiment, but also look at classical compostitions of renderings to see how the eye is captured. Mark Burginger drew a line in red on a recent critique victim's facade and it was exactly the way I saw it - there was a nasty escape hatch for the eye into space.
In conclusion, the problems with renderings is that authors don't "look" at them enough.
I'm just starting a nightmare project - a flythrough of a condo suite. The designer doesn't know her "story" and it is going to be bad, because we are going to stumble through this chaotic space and there won't be a unity to it.
Dwight Atkinson