I've been playing this mod for on and off 2-3 years and I think never ever saw this faction survive early to mid game, let alone expand and make anything. Even dabbling in many sub-mods or what have you, there is only one constant, Antigonids do not survive, even with that hellenic focused mo.What is interesting is that, even in Ancient Empires a mod for Attila by a completely different team, they also never do anything, though I haven't played it nearly as much.
Is it cause they are situated in awkward position facing many Illirian and Thracian tribes, Rome and Seleucid lackeys? Though its about 95% time that Thracians or Illyirians kill them.