Walls are nerfed with each update, again and again
It seems like each update offers at least one change that makes high lvl walls less important. Wbs lvl 6 and boss hogs are the most obvious examples, but mass skeletors also burrow through walls quickly and the improvements to jump spell lvl 2 are awesome if it is used well. This update should continue the trend; valks already devastate walls with their splash damage, and boosting their dps at all lvls will make them even more effective.
Cumulatively, these changes have made anything above lvl 8 walls unnecessary, in my opinion.
Bhima
Lvl 121, th10
Clan: Purgatorio