Wall Limited are a little less. Example :At Iron Age .. If Wall can build near 70 , it will be ok? Because there are so many building at our games and that building are big. I'm just give advice. Thanks
I don't see the limited walls as a problems that needs to be fixed. I see it as a challenge and something you must use strategically to try and defend as best as possible from attacks. The amount of walls is not as good as how you use your walls ;P
On another note the fact that you have so many buildings does not imply that every building must be inside walls. I think some building are better off left on the outside of the walls where they can act as a deterrent for your defenses.
Just my 2 cents