I've uploaded version 2.2, which has new vassal creation logic for Full History mode. In previous versions, the king would be given two de jure duchies, and the other duchy titles they held would be given out to dukes who got the entire duchy. In the new version, the vassals are "grown" using the same logic as the independent realms. Basically this means they look a little more natural.
Here's a screenshot of the Kingdom of Aquitaine to demonstrate:
Due to the random nature of the vassal placement, you can end up with one vassal holding large amounts of land, as in the above screenshot. I would have released this last week if I'd realised that this was just how the random number generator placed them, instead of thinking it was a bug. That screenshot is not showing the count level vassals, which are also generated using the same logic.
Change log:
Version 2.2
- Adds processing of holy site designations to title parser.
- Large scale refactoring of Full history generator.
- Added empire_min_size, kingdom_min_size, and duchy_min_size to ruleset.
- Generated vassals in Full History mode now use same logic as realms for generation.
- Renamed Title Generation tab to Generation.
- Removed Make Kingdoms check box from Full History options.