Lower City Defenses
Full damage to walls from ranged units (raised from half damage, their -17 penalty vs districts is already enought) and half damage to walls from non ranged/bombard units (raised from 15%)
Sid Meier's Civilization VI Mods Catalogue
Full damage to walls from ranged units (raised from half damage, their -17 penalty vs districts is already enought) and half damage to walls from non ranged/bombard units (raised from 15%)