To the OP: I think you're thinking about the Wall wrongly. You likely won't need to build some long, lengthy wall around a massive space. You'll likely be building a quick stretch or 2, and that will take a builder or 2. And if the Gold is hard to come by, you quickly get the gold other civs will not. And since Districts likely are hard to fill for small pop cities, the wall in the early game isn't taking up space. Quick gold, better defense than any other early civ early on, and the opportunity to move it/re-build it whenever you want... I think there will be a ton of tactical options. Particularly if you forward plant a city and use it as a defensive fulcrum. Big point: don't snooze on the gold, and don't view it as some circular wall. It'll be fun to play with. And if early gold is hard to have, that wall will be key in allowing you a larger army without killing your econ.