Thanks! Do let me know if you find something a particularly glaring issue
Also, remember to adjust the freemen/tribesmen manpower outputs accordingly to accomodate the 500 cohort size if you haven't already, otherwise you'll end up pretty starved for it, especially early game. Or forced to use fewer cohorts and thus pay less upkeep, as it is per cohort, and this might have a negative impact on the AI too.
And, yeah, so I read your earlier post wrong - if its 283k max, not 600k, then it does make sense after all, especially as Rome in year 758 haha. WE being so punishing is intended though - you're meant to care about it, and if it forces you to think whether to end wars early for less instead of escalating them into decade-long total warfare just for the sake of getting the 100% warscore deal, then all the better!
Manpower not getting depleted quickly enough in wars might just be because you're not really using as many troops as you can afford because no one can decently challenge you. I'd guess if you raised twice the number of troops, you'd run out of it pretty quickly, and I guess you'll find out if you're playing multiplayer with it, as long as its not perma-coop mode that is, because you know, player wars can be pretty challenging. Feel free to let me know how it goes!