Balanced scaling on weapon sets?
If melee has too much defensiveness, then if they reach a ranged weaponset they will outshine them in every aspect and shut them down.
What do you mean? Pvp? Weapon switches?
In pvp, thats why you are ranged, your goal is to keep melle away from you. You are ranged at the cost of survability.
If you want to be both melle and ranged, then either have balanced gear or select which set you want to be better I gues.