Since the Pahlava Reformed Gov't is a bit tricky to obtain, shouldn't the AI get that placed in all the territories it can be had when they conquer one of said territories? I just thought of this because I noticed that in all my campaigns where Pahlava gains any ground (and I'm not playing as them) that they will ALWAYS build the Reformed Pastoralism (assuming that isn't what they are given upon conquering) but without the Warlord's Horse Herds then there is no way for the Pahlava to access the Reformed Gov't as AI, essentially crippling them. While I've seen decent progress before with them it is almost always due to mercs or regionals. While I won't say I've never seen the AI make it to Parthian Catas, let's just say that it is a rare sight in their armies assuming you don't play a nearby faction and they survive/expand enough for you to encounter them.