if you go to a 4 stand limit you are going to do away with the rule of large bases represent 2 each if not it will make charriots and elephants pretty week

Do like the fanatsy version and double there support score when they charge.  Just give them a normal charge bonus though not the cavalry version.

3 CF +2 S +1 Charge bonus is a total of 6.  Hopefully, the owning player is also using the shooting ofthe chariots to soften up the enemy.