We still need a job specialising in hammers and/or maces, there's not a lot of classic jobs that use them apart from maybe Viking. I could see them being a good choice for a future tank, I'm just unsure on what kind of playstyle they'd offer.
For a ranged physical, we still haven't got a crossbow user. If we're willing to overlap weapon types, I wouldn't mind another bow job for those who want a "pure archer" instead of the bard/archer hybrid we have now. We could make the bows massive and just call them Warbows or something to differentiate. Ranger would be the classic job to reference here. But if I really had a choice, I think I'd like to see a hand-cannon job with Cannoneer; let me lob cannonballs at large packs of mobs, toss out bombs with various effects, and overall just let me unga-bunga with big numbers and explosions.
Other contenders would be a one-handed spear job with a shield (unlikely I think, if given the chance I feel like Square would rather remove shields from PLD), a duel-shield job (ironic considering my last statement), and a whip job (I think you could make a case for whips being a ranged weapon, they are meant to have a long reach).