I still think that if you are going to take out the units just take out the reforms entirely. We have 10 new factions, same number of unit slots. Make the game end at 27 B.C., get rid of the Augustus trait, units and reform. No one even gets to the Augustus reforms unless they purposely try to, and even then its a real pain, with the sheer number of turns to get to it, the 66 B.C. CTD, etc.