One question. After the NPC al-Amiri, the likeliest successors now are D'Oraz, Aarlander and Sejanus, van Holland (another NPC?), el Even, Muffin, de Bretagne (NPC?), de Flandre (NPC) and Nakonid (NPC?).
Since the Emperor is 54 and ill, maybe it would be interesting to start shifting some of the new duchies and lands to the player that should be emperor next. Just so as to avoid another "regency", it'd be useful to know who's able to take the next slot, or if there's some agreed order that I've missed (I'm a bit asleep). Besides, if I don't, the Emperor's heir would probably be quite powerful and you'd have the same problem all over again in two turns.
You may also consider recruiting new players for the new big duchies

.
Last but not least, I assume there's no unwritten rule against grabbing someone else's throne, is there?
I'll try to finish the wars off before he drops