You might have already seen it, but another “street level” ancients game is Song of Blades and Dust written by another LAF member, Irregular Wars Nic. It uses the game engine from Song of Blades and Heroes, and adapts it to skullduggery in Rome, Greece, or (with a little tweaking for period flavour) other pre-gunpowder settings. It’s an easy system to use, but with a lot of subtlety. Playing that game on your table would be a fun afternoon, your terrain looks awesome!