Lordclane
Chieftain
One of the features of Roman Legions is that they were the prime unit for building those famous Roman roads. They also typically constructed their own seige equipment, and, for swordsmen, had a level of organization comparable to that of a Greek phalanx. Their main weakness was poor-to-nonexistent cavalry. Their missile units also leaned heavily to spears and slings, and were hence relatively short range. This suggests an interesting variant. Allow Roman Praetorians to also function as engineers, though they should probably be more expensive than now to allow or the considerable expense and training they required. Roman missile and cavalry units should not be as good as their contemporary counterparts. In fact, since Romans adopted the stirrup very late, horse archers should also come very late for them... but I'll address that in another post.