Considering we don't have elemental resistances and meaningful debuffs, this is the best RDM we can have...

Attacking on meh mobs, exploiting elemental or status weaknesses, sub healing, buffing... that's how I always used RDMs in other FFs, we can't do these things here without changing the core of the game, so as long as it works 50% caster 50% melee I will be happy, but having a BLM with a pointy end staff to stab things every 5min would be very disappointing, I guess we'll have to wait to see more.