Ack. I've actually given up on that campaign. When I hit the 30k per turn mark I found the game slowed down and I REALLY wanted cataphracts (just not Seleukia without it!). I've begun another Arche Seleukia campaign wtih VH campaign setting and Medium battles, and Huge unit size. My god I'm getting raped every turn. It's about 20 turns in and I've lost most of my eastern provinces to Saka, Pahlava and the Eleutheroi. They're just so damn aggressive and their cavalry archers completely annhilate me.