Noone, of the AI factions will be reciving the money bosts they need, due to dum AI. Frankly I am amazed that the AI has done all that you said it has without the money scripts. On the down side of the scripts, it can cause the sekeucids in paticular to become over powered, so you will want to look at this thread: https://forums.totalwar.org/vb/showthread.php?t=83349