Shame you for posting such an uninformative map screenshot. It shows no part of the world we haven't seen yet to add to my province-changes-tracking
As for the whole dynastic system, not sure how I feel on it. Certainly some randomness is good, but the absence of so many of history's critical figures would probably take something away from the game.
Perhaps for the more famous monarchs (Louis XIV, Elizabeth, etc) one could have an event-based system?
Something such as (for England), IF your previous monarch dies between 1558 and 1603 (possibly other conditions as well), there is a 50% (or however) chance that an event will fire off setting Elizabeth I as your queen.
If that event doesn't fire, perhaps you could instead have another that makes Elizabeth Tudor (idem for Louis Bourbon (XIV), Gustavus Adolphus) available as an advisor (or for some of the other major monarchs, a military leader)