Also changed clan Thrafey, now it looks better I think:
I was thinking about it, but for now decided against it. These are mostly placeholders and the actual insignia should look good on everything - banners, shields, flags, etc.Also my suggestion for you, is to maybe try to use different shield shapes (escutcheon), to give them more personality.
Maybe I will use different shapes to distinguish between different types of icons, though. For example, I could use round shields for Hammerfell regions. But I am not sure at the moment.