Most unliked moment in mod for me - numbered original legion (VII, XII etc.) player have only in start of campaign. After victory in Italy you have only ordinary legionaries without differences recruting in Italy or in Asia or Spain...
We have unique legions only in Bellum Gallicum against barbarians. Most interested have this legions in Bellum Civile.... Legio XIII against Legio II
But in Bellum Civile we have only standart legionaries. Sad...