You are trying to divide what can not be divided. In order to show how well a tree is styled in all dimensions, you must show it in all dimensions. I believe the style should dictate the display and not the other way around. Why, after all, should we limit the styling potential of a bonsai simply because of the way it is displayed?
You challenged me to "explain why it is so important to consider multiple views, if you are only going to see one." My answer is why must we only see one? You are limiting the potential of your bonsai with the chains of traditional display. There is nothing wrong with traditional display, it has served us well and we should keep in mind that a three-dimensional tree can just as well be shown in such. However, a tree styled for one view only could never be shown in a three-dimensional display.
As far as space considerations go, I fell that designing bonsai to fit more into a given space is somehow completely missing the point. I must have misunderstood your intent here.
Again back to sculpture. While Mark was correct in stating that sculpture also has a preferred viewing angle, it must also be remembered that most sculpture is displayed so that the viewing public can walk around it. The same pedestals that sculpture is displayed upon are mirrored with the monkey poles we use. Mark states that sculpture has a front and I agree, but sculpture also has other sides, all as technically perfect and artistically done as the front. You can enjoy the artist's talent and attention to detail on all sides.