Just add A skill to Battle mage spec : Battle mage sacrifices ability to shoot most of their ability from distance for more Defensive stance. They are expert in wielding dual wield of Weapons and using his magic ways to enhance them with mage powers. (then I would Add first line of Talent skills with 1 edit - only one enchant can be activated at time)
They become more formidable using arcane magic around increasing armor value from items by 600% (or 700%).
They spells (arcane blast, fireball, Frostbolt) are used only at 15 yards and Melee attacks have chance to proc those skills and make them instant.