Well, I just remembered of an original idea (I suppose -_-), which is: Every Macedonian AAR is about the same thing "HAHAHA We are teh tr00 sucess0rs of Alex, lawlz lets conquer back his empire"
While what I remembered was a different approach. Instead of having to reconquer the empire like 200 other Macedonians AARs, why don't you follow up on this idea: You family recognized the greatness of Alexander, but his Empire has now split and recovering it would be difficult. Instead, your familly turns to creating a new Hellenic Empire! Since those Eastern Barbarians are already being Hellenized, why doesn't your familly expand North and bring more and more people into the Hellenic familly?

I suppose that is a nice idea. :P