I'll try to see if I can find a unit to go there. Or perhaps I can make the spearman 2/2. Or the bowman 2/1 and archer 3/2? So the American can use the bowman as an offensive hit and run unit, with its 2 move?
Steph, have you consider this with hit-and-run units. They could be Peltast, slingers, javelineers, skirmishers, velites and such. Not much in attack and ever less as defensive, BUT they would be a historical correctness AND good for those that can´t make horse units in the beginning.
They will reflect the combat both with the likes of Alexander and the Romans sending out Peltasts and Velites to shower the enemy than running to cover. With 2 movement they will retreat if not facing same kind or horsemen.
Remember that cavalry was not a very high item in the early Roman warfare, so it would be a fun experiment to try this
IF YOU NOT ALREADY HAVE GIVING IT ENOUGH THOUGHT and descarded it...
I take it will be easy to find flavour units for most nations and this kind of unit will be popping up perhaps just before horsemen. At least very early...