The DPS change was mostly to help make it easier to complete quests/missions in the overword as a solo warrior. (quote below)
It takes more than “your average warrior” to complete high shards, same goes for paladin. It takes skill and practice, maybe a bit more for a warrior, but you can’t really balance it around anything but the top warriors, otherwise those top warriors would become OP.
Mist keeper, sure, it’s not exactly easy to do as a warrior, but it is 100% doable, just takes a lot more skill. Ancient guardian isn’t really a problem at all tho.
Most of citadel is pretty easy on warrior tho, not sure what you’re on about there.