Well.... I pretty much haven't found a mod that suited me
DM was good, but it needs more units and variety for minor factions. Causa belli just adding unfinished units with messed-up portrait and descriptions for me.
IS is the best, though i feel it's unfinished. Comparing unit roster for GB and France with other factions... Maybe RoTR will fix this?
I haven't try ID because lack of single link and ER because it haven't updated for ages
I guess for now i'll stick with IS