Re: Hellenistic succession? Name change?
IIRC you can can do that manually, by modding some texts, but the solution is far from perfect. Let's say that you play as the Seleucids and a family member named Aristomenes becomes your faction leader. You can go to desc. names and find the part where it says something like "Aristomenes Aristomenes". The first Aristomenes is the data and the second is the visual result, so if you replace the second Aristomenes with the name you want (e.g. Seleucus II), you'll have a Seleucus as your king. However, that means that every other Aristomenes, even captains or admirals, will also be named as Seleucus II. You can change it back when Aristomenes/Seleucus II dies, but still it's far from perfect...