I'd really like to see the Red Mage as a tank, one that uses parry, dodge, and magic absorbs. Using thinner swords than Paladin (rapiers but also longswords that are thin and "elven like" as well as sabers, etc.

Their "Red Magic" I'd like to see Auras. You click and it channels White Magic for 10s or 30s then it channels Black Magic for the same time doing the opposite. For instance, the Damage Aura: for 10s the Red Mage draws on Black Magic giving the enemy a penalty to defense/armor, then for another 10s that turns into White magic and gives the same to the party but as a bonus.

There could be a Damage reduction/vulnerability one, a Healing/Damage one, a Haste/Slow one, etc. I like the idea of having them use White/Black magic to create opposite effects Those Auras would be their Job abilities whereas their base class provided their tanky stuff. We need less DPS classes and more Tanky ones.