Since they redid Sage to be completely unique to ffxiv (it was originally a master class of whm and blm) I think the melee dps will be Magus or Warlock reimagined for XIV. It's been in previous FFs as a upgrade to blm and rdm but we could see SE mold it to a more melee focused caster that uses Enfire, Enthunder, Enblizzard, etc.