Titles should each really have their own inheritance law. For instance an elective kingdom should not mean that the hereditary estates of the former dynasty be merged with the new elected duke or whatnot. Certain titles could be transmitted semisalically, salically, electively, gavelkindedly etc.
Speaking of elective law, historically kingdoms elected other monarchs as their king in elective monarchies as often as their own powerful nobles, and with separate inheritance law for each title this would be possible.
Changing the law on a title should be a difficult and time consuming matter, especially elective titles.
Speaking of elective law, historically kingdoms elected other monarchs as their king in elective monarchies as often as their own powerful nobles, and with separate inheritance law for each title this would be possible.
Changing the law on a title should be a difficult and time consuming matter, especially elective titles.