The thing about its "op support abilities" is it gets left behind and becomes almost useless with just myth/crafted pieces. My group doesn't need Mage's ballad Army's Paeon and Foe's Requiem even in coil including t4 and t5. When you're just starting is another story however it still is not OP in my opinion, but very good. My 2 cents

Caster's have high weapon damage probably coz they don't have auto attacks like melee/archers