It's something I've always wanted to do - get a few single duchy kingdoms in a small area, and have them just war each other symbolically. Or, you know, since I mentioned War of the Flowers... How !@#$ing epic would it be to get an Aztec-inspired society-religion (but updated to a more medieval mindset) that overlaps the tiny kingdoms? Symbolic wars, where captured nobles are executed to feed a god of renewal and blood.
Wrong continent, wrong time.