1. I honestly don't like how it takes a builder to upgrade walls cause it takes no time to upgrade the walls so when I have my builders busy I would like to upgrade my walls at the same time. I think this would be great to add..
2. This idea is not as big but I think it should be added.. so I think it should tell you how much xp you need before you level up. Like for example on the blue bar it should say like you have 2343xp. Until the next level
I hope you apply these ideas in the next update thank you for ur time 😄