Why not just go back really far in time for the next one? They already have the units for ancient Egypt done from RTW. ;) Really ancient times haven't been touched on too much, on a large scale (more than one country or city-level) as far as I know. How long has Gaul been around, btw? See? ;) I'd have a lot to learn, even from the vanilla version of Ancient Total war, and I'm probably not the only one when it comes to that (comparitively) neglected time period.