If we can't get Cure V, please implement a spell that's self cast only that boosts Cure Potency by a function of Enhancing Magic Skill. To make this not worthless, the bonus needs to stack with Cure Potency+% from gear and not contribute to the same cap. Could start small at 5-10% but with proper Enhancing Skill gear/merits it could cap at 15-25% at 99 along and with the right Cure Potency Gear could contribute to a ~75% + Cure Potency boost to RDM's cure spells. This would give us a cure spell as potent as Cure 5 but with the massive hate of a Divine Seal+Cure4.
To make it even more balanced give it a short duration/long recast so that RDMs remain situational healers and not main healers. Maybe 30 second duration, 3 minute recast like Reprisal or something. This way we wont have a 900hp cure 5 but a 800ish HP cure IV for bad situations and we can't abuse it because of the recast and duration.
Another option is to make 2 job ability stances for RDM. One to focus on melee abilities, the other to focus on mage duties.
Bravery:Enhances attack speed, accuracy and Sword Enhancement Spell Damage "Allows the use of extra weapon skills" but increases cast speed.
Effect: Grants a +10% Attack Speed Bonus like Hasso, +10 accuracy and +5 damage to Sword Enhancement Spell damage. Allows the use of exclusive sword weapon skills i.e Red Lotus Blade/Vorpal Blade/Seraph Blade/Sanguine Blade.
Piety: Enhances Magic Accuracy, Magic Attack and Cure Potency but MP cost increases and Enmity is defense is lowered
This will grant a bonus to Magic Attack, increase Magic Accuracy and provide an ample bonus to Curing power but at the cost of +10-15% MP across the board. Additionally +10-15 enmity will make us think twice before spamming cures or nukes due to hate gain.
I'd rather have both of these be spells since it's RDM nature to have both White and Black magic AND Melee ability available to them at the same time unlike SCH which has to choose between Black or White magic or BLU that has to set spells.