Been reading up on Hellenistic armies (especially the pike phalanx) and I've finally familiarized myself with both the Achaean and Aetolian Leagues. Can I suggest that in future releases there be a way to represent the sheer pugnaciousness and self-absorbed love of freedom all southern Greeks had? It should be monumentally difficult for ANY faction (so not just Macedon, but Pergamon, Egypt, or any other state) to build any government other than allied democratic and allied oligarchic (no matter the culture of the invading state - the greeks hated the macedonians sometimes even more than barbarian invaders ) and have barely manageable and content populations. Like there should always be a large revolt factor in southern greece, that goes from extreme to barely contained if they picked said allied governments. In the course of a campaign, that means seeing Koinon Hellenon probably becoming the most resurrected faction out of the whole roster.
As an addition to the whole roleplay of having certain regions where the peoples are famously independent and free-spiried, may I suggest applying these *higher" (depends on meta-gameplay balance only devs keep track of) revolt risks to these cultures/regions/peoples (revolt risks for invading/foreign cultures holding following lands): the nomadic steppes (I mean the steppe peoples ride free and all that, also despised settled societies telling them what to do), illyria (it took massacres by Tiberius and Germanicus to finally pacify them, am I right?), Germania, Pictland (so Scotland), Arabia, Judea (do they have one province?), Rome itself, and then Eastern Europe (specifically lands held by the Lugians?). I know people already gripe about how hard it is to expand in EB2, but considering historical accuracy is the goal here, all aforementioned lands/peoples were just THAT difficult to pacify (as long as one doing the pacifying are NOT native to land itself).
P.S. Forgot, the Dacians were also infamously intractable. As well as the Armenians, and neighboring mountain tribes (people living in mountain ranges north of Iran).
P.P.S. Forgot also about the Baktrians (Afghanistan). Them too.