The new deep relics look like 9/11 for caster classes.

Melee classes get better FTH/INT then the casters we have while only suffering a tiny hit to HP (FTH Guardian has 59 FTH and 1160 HP). This makes them just straight up better at casting than the caster classes.

The caster classes get relics to swap for melee stats, but they barely gain any HP. Revenant's relic gives her +5 vigor which only brings her up to 880 HP, good luck meleeing with that when depths enemies deal triple damage.