I am; I had to take a break from modding (and EUR in general) for a while because I was feeling burned out, but I'm back now. I assure you that progress has been made over the past week or so Not enough to report on, but it's being done.
I think such balancing is better done with policy differences. Fir example the Ptolemies were notorious for not trusting the Egyptians and only employing Greeks, Celts and other mercenaries. The Seleucids on the contrary had a vast empire, yet mostly poor and empty (in the east) but still tried to hold onto all of it when it would have been more prudent to put their border in the Zagros. Egypt only had one real frontier up until the Egyptian rebellions which was Syria, whilst the Seleucids had enemies in every direction.Looks great, looking forward to it. I don't envy you when it comes to distributing population and such so that the Seleucids (and to a lesser extent Egypt) doesn't end up ridiculously powerful compared to everyone else.