One issue with Fenris armor is that it takes a lot of resource and rng to be able to craft / level it up. Swamps are much easier to find then Frost Caves and if you get a good one the iron is very easy to stock up (despite it being used in a lot more ways).

I wish the night time werewolves and ulvs could have a chance to drop fur and that cultists spawned in cauldron event.