Just for a change, it could be interesting to play DBA (version 3.0). It won't allow everyone to play in the same game, but several games could be played at the same time, so everyone gets a couple of games in a session. The rules are easy enough and I could help out with these.
I have Late Carthage (obviously) and Polybian Romans, but would also be able to field Syracuse, Iberians and Gauls at least with a bit of additional painting.
Another option would be to play an extended game (with three times the forces participating in a normal game), which could allow everyone to learn the rules at the same time, but it can be a bit of a drag for low-pip commands (those don't get to do as much as others). Plus I don't have the armies for this kind of extravaganza. We could get two games of this in a session too, with opponents swapping sides if wanted.