Regarding jobs as a whole, I expect...
- Based on live letters, at least 1 DPS in each future expansion that has new jobs.
- An expansion will come with only 1 job, or possibly none at all.
- An eventual reorganization of jobs by GEAR SET.
- An attempt to balance of total Melee and Ranged, divided into their armor sets.
- BLU will be moved from "Magic Ranged DPS" to "Limited Job".
- Not so many full new expansions left; maybe 2-3.
Regarding new jobs, I expect the next expansion to have:
Regarding new jobs, EVENTUALLY I would guess/I could see...
- Ranger/Corsair/Marine: A ranged rifle user, wearing aiming gear, using the "bow-mage" mechanics. Possibly "Colonial Era" flavor. Possibly related to the "New World" to the west.
- Mystic Knight: A dual-wielding, flashy sword user; probably scimitars or Khopesh. Possibly "Arabian Nights" flavor. Possibly related to Meracydia.
- Beastmaster: An axe-wielding limited job, wearing Maiming gear. Obviously has pets.
- Geomancer: A bell-wielding healer, using essentially Conjurer's base kit but reflavored heavily. Probably a "Shield Healer" using a revamped Stoneskin.
Regarding new jobs, my personal wish list..
- (New Job): A dual-crossbow-wielding, acrobatic trap user, wearing scouting gear. Something like Linkle or even Bayonetta.
- (New Job): A shape-shifting job.