i dont really think you should reduce the amount of men that are in the first cohort because in reality the first cohort was probably the bulk of a roman legion. it was merely 1/2 of it. the rest were other legionaries and auxilia units
i also have a suggestion:
do u think you can include the modding legions skins in the XGM mod? cause the last time i installed those and the text that was given by froggie my game ctd when i started a battle in campaign.