Things I'd personally do.

1. Remove Raise from Red Mage and Summoner.
2. Dual Cast increases Spell Potency (10-20%). This equates to around a 5-6% damage buff.
3. Embolden no longer decays. This equates to around a 2% personal buff and a buff to 2% Physical DPS overall.

Things I saw someone else suggest

1. Moving Vercure to the Ability type.
-I like this idea because it does become a bonus the Red Mage brings instead of a trade off. It'd either need a somewhat comparable cooldown (like 15 seconds) or maintaining the MP Cost.