So I've played several iterations of Hegemony and I'm not exactly clear what the latest effect of walls is (aside from the obvious defensive one).
I've read that walls cost money to maintain (they used to cost pop, remember that?), and I've also read that they double the amount of tax from each pop point. If both of those statements is true, then there must be a sweet spot in which walls for cities over a certain population are always a good idea (at least for native cities).
Any definitive answers? I can't figure out if it makes sense to just put a wall around every native city in the game, or if it would pay to tear them down as it did in previous versions.
PS -- this game gets better every time I play it, and I've had it since the day it came out. Can't wait for Rome.