What if instead of mass vulnerability you get a larger damage condition on the enemy but it required switching weapons to activate. This would remove the thought of rangers being too strong at either ranged(annoying) or melee(what) but it would give them a better place in 1v1s. In addition, I don’t think weapon switch speed should be so long on ranger if at all.
Imo give them a 5 second switch time and rework their skirmisher trait.