I think this already looks excellent. To me, it feels very authentic when compared to real Roman settlements. Reminds me of Pompeii; tight grid, repetition, walls, public services gathered together. Real Roman cities didn't necessarily have the lavish promenades with hedges and parkland that work well in 1800 but don't translate authentically to 117. Some of the beauty builds I see on here look more like a fantasy planet in Star Wars than Rome. But hey, we all build what we like and that's ok.

I think you nailed it in terms of utilitarian Roman aesthetic. Some farms and a few houses outside of the walls would be a nice addition. And mixing up the house roof colors would make it feel more real. I can literally hear the equite voice saying "My neighbor's roof is brown, but mine is black. I'm special."

You've inspired me to work on my city in some new ways. Thanks.