Hey Phrag,
Yesterday I had an interesting conversation with Ted Mattson (California) and Jack Douthit (Wisconsin), both are great (fairly well known) bonsai artists. Ted was visiting Jack. We talked about traditional versus non-traditional style. Both had an excellent point. The great artisits, from Renoir, Monet, Picasso, Dali, O'Keaffe, ****** pretty much one and all were competent or even excellent to superb draftsmen. They all knew how to turn out a conventional drawing or painting. Once they mastered the conventions, only then were they free to break the rules. Consider this with bonsai. Walter Pall, Kimura, and the rest of the best can all turn out a "proper" bonsai, inside the clasical traditions. Once you understand the rules, particularly the why of the rules, then you have the understanding to freely break the rules with good effect. Walter Pall understands what it takes to tell a tree's story, so he knows what he can get away with. As a student of bonsai, I have to take my teacher's advice and learn the "classic" design, before I try to strike off and invent my "own style". There are reasons for most of the "rules".
A medium-high quality tree displayed in a proper 3 element traditional display will be stunning. A high quality masterpiece displayed in a cluttered non-traditional setting without prople sensitivity to the space surrounding the tree will simply not show well. All the rules really are about visual impact. Once you have it down, and mastered a sense of visual impact. You can break the rules at will.
Just a thought - Leo