I think there's much ado about nothing as is, but if we wanted to deal with some inequities...

Give Black Mages a Temporary Raise ability. 1 minute duration, 5 minute cooldown, ignores Ressurection sickness. Brings back a downed Ally at full power, kills them when it's over. It's a 'Raid save' res, it's not spammable, it's not MP based, it's flavorful for the Job and base class. It won't be as reliable as a hard Res, but if you need someone at full power, this is the spell for it.