While I appreciate your comments about the builder of a Diorama needing to be accurate and complete, there are some other aspects that should also be considered. First of all, if a diorama is such that it is not correct with respect to divisions being in the wrong location, or unrealistic settings where there isn't enough debris for the damage created, etc. the piece probably wont be shown in any event. For myself, I am no expert in any of this. I find the research almost as much fun as building models. I hope that when my son (perhaps daughter if she's interested0 is of the right age, he will build some with me. I do it for the simple fun of it. I try to make things better each time; however, it is the simple pleasure and relaxation I get from building these scenes which are an extention of my imagination. I try to base them on photographs and stories (my father in law was in the Battle of the Bulge as a medic and my grandfather was at Verdun). I heard many stories of what was visualized and the impact it had on them. I try to recreate these events, when I can, in dioramas.
Remember, there are several levels of building these things. There are the very serious builders, there are the "wanna-bees" and then there are those like me. Sure I would love to one day enter mine in a competition, but that isn't what drives me to build them. I just like the way they look in my "war room."