I'd love there to be a way to have no De Jure titles in a game, or ones that if they aren't in at the time, cannot be De Jure. It would be fun to watch a world be built up and be unique. I know they made it so you could create your own Kingdom and Empire. But the De Jure titles were still there and it messed up everything. Take those out, and add creating your own Duchy/Petty Kingdom. Make the world crafted by what's going on and who becomes powerful.