Alright, then, I can therefore use absolutely anything at all for the mask, even a single 2x4 red system brick, and I'd still have an equal chance at winning then, by that logic. The thing is, it really doesn't work that way in practice. You cannot help but take the entirety of the moc into consideration as it is presented to you as such. Presentation matters in any contest entry, or any sort of body of work, for that matter. If I made a powerpoint presentation with nothing but white background and black text, and the following presentation had some simple colours and easy-to-follow text, that one would be better received, even if the subject matter was identical.
This is getting somewhat off the rails of my original concern, however, which was the artist essentially having full control over finalizing the moc, regardless of what the moccer's initial intentions were, thereby taking that much away of the moccer's efforts. And, now that Eljay has clarified it to me, so say the BS01 art drawn by the artist has Mask A, but the moccer dislikes that and wants to use Mask B. What then? which is the "canon" form? Do you respect the moccer's wishes or are they overridden by rules decided by a few? Furthermore, and I do not mean this ironically, this situation is the best sort of compromise: potentially, both parties, the moccer and the artist, are in a losing situation. (After all, they say the best compromises leaves everyone unhappy). The moccer may not like the artwork produced, disagree with the mask choice, etc. etc. The artist may not like the winning entry yet are forced to draw it anyways.
This entire situation is just rather messy. I know Eljay has stated that he's done a lot of work behind the scenes to try and satisfy all sides, but, truth be told, that will never happen and this is indicative of that.