Many people complain about walls to strong. In my opinion def value of gates, walls and tower could be lower and att value of tower little higher.
I'm fine with this setting (much harder to take castle ).Gates are problem:- too much time to breaktrough (def walue should be half of present).
I start with old descr_walls and I find that is too much easy to enter the city and I quit play.Now I enjoy sieging because it's hard and I need to plan my attack if I want to take city in one turn (special siege army with artillery).No more blic .
Sieges should last longer (perhaps 2x present time).
I'm sieging Jerusalem against full stack of archers spears some HA and Cav (general with five stars).I have 3 catapults etc.(full stack army lots of crusaders).If I dont breach 1st time i will attack again and again and again (or I could attack with lesser army and wait them to come out).