Geo for 14 would be interesting, could give them a combination of elemental aoe dots and weather spells for both dps as well as healing.

Tho on the stormblood page they list red Mage as one of the new jobs. As for the other new jobs personally from watching the teaser trailer I think they could be dancer and berserker. The way the girl was dressed and fought reminded me of the dancer job and the guy reminded me of a berserker with the way he was dressed and seemed to fight with more of a pure power and rage.