Since nobody mentioned it, Time Mage would obviously have Hastega. Some other possibilities: a Quick type spell that could reset the timer on spells/abilities(already have this w/ corsair too);would have Slow 1, 2, and possibly even 3 at high levels or as a merit spell; I think Regain is a good idea for Time Mage too; Comet; Reflect possibly; and the most important thing that I personally would do w/ a Time Mage would give it a Teleport-like spell that ties into the past, there's a portal to get to the past, so this Teleport would take the party directly to the portal, both in the past and in the present.

NECROMANCER, a beastmaster that specializes in undead. There's all kinds of things that SE could do w/ a Necromancer, and I personally would love it. I also think it could fit well into WotG. You obtain abilities/spells for specific mob types in the past by killing them, then use their dead spirits in the future as 'pets'. And I dunno about an all-out charm for skeletons and fomor, but the necro could have an ability that puts the undead to sleep(a true death or something) that they come out of after a time.

I hope for a tank, but I can't imagine what SE could possibly do to make a tank that's original and not just a clone of warrior paladin or ninja. Maybe a necromancer type job could tank w/ a mix of abilities including something like "Turn Undead" which basically turns the pc undead for a limitied time, or spells like Transmogrification or Mind Wall like mammets have. Transmog absorbs all physical dmg, and mind wall absorbs all offensive magic.