Originally Posted by Eagle Pursuit
It would make sense for Raging barbs to be immune to Larian's version of Frighten
Berserker Barbarians already get immunity to being charmed and frightened through Mindless Rage at 6th level, so Larian would either be moving that feature to a lower level and/or to all Barbarian subclasses, or we're still left with the problem of being frightened from levels 1-5 as a Berserker and all levels as a Totem Barb.

A much more sensible fix is to change Larian's version of frighten to work as per 5e rules, though I suppose all Barbarians being immune to frightened would be better than nothing.