Is there really any way for them to f*ck up the next job reveal?

[Renathras]

"How to mess up a Job reveal?"

Don't tell people what Role a Job is until super late, even knowing that lots of people think it will be a different Role. As a Healer main, I'm still salty about how they knew people thought DNC would be a new Healer Job, and instead of early on saying "It's going to be a DPS Job", they played it out, kind of stringing people along, until the reveal. DNC had the single worst Job reveal reaction in all of FFXIV's history, and I suspect that was the reason for it.

Be clear up front it's a new Tank/Healer/DPS and if DPS, what subrole.

All things considered, it will PROBABLY be a new Caster, since that makes the most sense. Over the years, it's been like this:

1.0: Game start: 2 Tanks (PLD/WAR - once Jobs patched in), 1 Healer (WHM), 2 Melee (DRK, MNK), 1 Ranged (BRD), 1 Caster (BLM)
2.0: Game restart - that said, we got a new Healer (SCH), Caster (SMN), and Melee (Rogue): 2T/2H/3M/1R/2C
[Note NIN was not added until 2.4, but by the end of ARR, this was the count, not counting Cross-Class non-Job builds.]
[Note here that Roles were considered only Tank, Healer, and DPS at this time, though you needed one of each DPS type for the +5% party damage bonus.]
3.0: New Tank (DRK), Healer (AST), Ranged (MCH): 3T/3H/3M/2R/2C
4.0: New Melee (SAM), Caster (RDM): 3T/3H/4M/2R/3C
[Note that BLU was added in 4.5 as a Caster, but has been a Limited Job its entire run, and so doesn't count in a more general sense - and can do all roles anyway.]
5.0: New Tank (GNB), Ranged (DNC): 4T/3H/4M/3R/3C
[Note here, BEFORE this, Melee, Ranged, and Caster were not considered distinct; they were explicitly made distinct, even in your Jobs page of your Character sheet, in 5.0.]
6.0: New Healer (SGE), Melee (RPR): 4T/4H/5M/3R/3C

The most in need of an addition are Ranged and Caster, and of those, Caster has gone the longest without an addition.

The most over-represented is Melee, meaning no new Melee need to be added. Also historically (not that that's ALWAYS a good guide), Melee have been added in every even numbered expansion; 2.4, 4.0, 6.0.

Given all this, the most logical additions would be Caster, then Ranged, then Tank, then Healer, then Caster, then Ranged, and at that point all would be even with 5 representatives.

.

Of Caster, Green Mage (status afflictions; DoTs in FFXIV terms), Geomancer (as a Caster using nature elemental magics rather than a Healer; so if CNJ was a DPS Job, basically), or Time Mage (Green Mage, just with a bit more support and some Comet/Gravity magic; it and AST step a little too close to one another, though, but I guess GEO would with WHM or more CNJ/leveling WHMs...) are the most likely options.

Then again, they do curveballs from time to time. For all we know, they could add Runic Knight as a Tank or something. Just depends on where they want to go with the expansion and what story they want to tell.

[UkcsAlias]

Of Caster, Green Mage (status afflictions; DoTs in FFXIV terms), Geomancer (as a Caster using nature elemental magics rather than a Healer; so if CNJ was a DPS Job, basically), or Time Mage (Green Mage, just with a bit more support and some Comet/Gravity magic; it and AST step a little too close to one another, though, but I guess GEO would with WHM or more CNJ/leveling WHMs...) are the most likely options.

My votes for a caster would be: geomancer, necromancer, and chronomancer

I rather see green mage as a healer. For a caster themed around nature geomancer already sounds a lot more 'aggressive' and by that suits better even if they effectively are the same. And maybe they could both still originate from the same starting class and by that just be made quite similar (for example biologist splitting to geomancer and green mage? ofcourse with entirely diffirent ability sets, but this way at least some aspects can be kept the same as a reference to actualy just being the same but for a diffirent purpose).

[RyuDragnier]

My votes for a caster would be: geomancer, necromancer, and chronomancer

I rather see green mage as a healer. For a caster themed around nature geomancer already sounds a lot more 'aggressive' and by that suits better even if they effectively are the same. And maybe they could both still originate from the same starting class and by that just be made quite similar (for example biologist splitting to geomancer and green mage? ofcourse with entirely diffirent ability sets, but this way at least some aspects can be kept the same as a reference to actualy just being the same but for a diffirent purpose).

They could also use Geomancer as a Scouting class if they wanted. In FFT they were actually pretty powerful physical attackers in addition to their Geomancy magic. Something like that would work well as a second scouting job so they should desire. Either way, I want those bells used.

If used for Scouting, I want the bell attached to a bo staff or something like that. Beat the crap out of the enemy and then ring thy bell for magic.
If just pure caster, RING YOUR BELL.