Until then, I've been worldbuilding the old fashioned way... in spiral notebooks. Getting ideas together in anticipation of my kids playing D&D...
So, since I have a moment, here is what I've been working on:
Fantasy World Heraldry Guidelines (WIP)
Under the Imperial system there were seven castes; commoners, yeomanry, gentry, peerage, nobility, royalty, sovereignty (listed in ascending order).
Commoners were not granted, and not permitted, arms of their own.
Of course the addition of complexity was a privilege not a requirement, and there were humble knight-kings who bore simple arms of three complexity points.