I know that my suggestion is a kind of nerf, but:
why is a mob able of hitting you with its club/fists/sword/... while staying 5-10 meters away of you ? It happens everytime in mission, the mob is in the opposite corner of yours and hit you in melee fight. That is not looking real or plausible, or the way it should be, in my opinion.
What I propose is decreasing a bit the range = the minimum distance mobs (and you, characters too) can hit you in melee.