The sentiments expressed here make logical sense to me. I think in addition to the already presented thoughts, another thing that is problematic in our scale is the relationships between the sculptor, company, and consumer can work against attempts at accuracy as well. I will generalize here so my statement is not applicable to everyone, but I would say that most sculptors who do it for a full time living tend to make their money off the quality of their art and not because they are avid historians at heart. In my opinion this can create an issue where the goal of the set is to be more artistically appealing or achieve a new pose type, etc., etc., rather than being historically accurate or even practical for diorama/wargaming usage (I would say Caesar Miniatures' ancient sets are probably the most clear example of this I can think of right now). I see this all the time especially with poses that hold shields (which are vital for most pre-1200 AD eras), but it holds true to some extent across the whole scale. The company of course will also want to develop the set that gives them the most likely opportunity for profit, which introduces a certain conservativism to the whole process. I think this process is not unique to the 1/72 scale, as similar issues affect movies and PC games as well.