This whole banner purge business is nonsense. If there were clear guidelines, and then if they were followed consistently and promptly, perhaps it would not be such a big deal. Currently the banner purge is a simple matter of taste. It is not about realism (and I actually know about historical accuracy in heraldry), it isn't about vulgarity (sperm removal is, but unicorn removal?) and it certainly isn't about the quality/texturing of banners (cup clan, mercs). It is simply about what a certain few that have control over it find offensive to their personal tastes. And it's their game so, basically, fuck you.