I don't think all coastal cities had ports, however. Long after our period, I seem to recall something about Emperor claudius building a new port - so towns were still being built up. And the colliseum didn't come about anywhere near the republic era, though I'm aware there were other large places such as the hippodrome. But yeah, in vanilla, I felt it was game-like to be building up the town, rather than realistic. I'd like the towns to be able to produce what they _should_ be able to produce, such as triarii.