Geomancer (CNJ Job) concept

[Giarc]

I like the idea of GEO and I think it fits perfectly with the CNJ class, but I don't see any way of turning the base class into a DPS. I'd make it a healer with some different flavor.

Ground based effects: instant cast and you could have two out at a time.
The cost would either be TP/tick (opposite of Bard) or MP/tick but you'd risk running out quickly

Earthen Ward - Increases Defense of party members standing within the effect
Increases potency of Earth based spells when cast within the effect (Stone, Stone II, Stoneskin)
Zephyr Ward - Regen ground effect
Increases potency and duration of Air based spells when cast within effect (Aero, Aero II)
Aquan Ward - Haven't decided if it should be Refresh/TP regain (could be OP) or healing potency up
Increases potency and duration of Water based spells when cast within the effect (Fluid Aura, Flood, Spring Water)
Flood - Water based aoe dmg
Spring Water - Restores both HP and MP to target

[Kitru]

I'd make it a healer with some different flavor.

Doubling up on roles within the same job doesn't really work since it's still going to play in almost the exact same way: your GEO would still be using Cure for maintenance healing, Cure II for burst healing, Medica/Medica II/Cure III for the relevant AoE scenarios. About the only thing you're changing is getting rid of regen/benediction and replacing it with some ground effects, which isn't actually going to change much since you're still providing the GEO with a regen (except this time it's AoE). You're also beefing up their damage and healing/support capability (via the ground buffs) so that there would be next to no reason to actually bring a WHM since their healing is basically identical but the GEO brings more of everything else.

Jobs only allow for 5 new abilities to be added and minor changes to the existing abilities, which is why you're not going to see 2 jobs of the same role off of the same class or, as I'm pretty sure you've already discovered, new jobs off of GLA, WHM, or BRD. A job has to play in an noticeably different way for any others in that class, which won't happen without changing role, and it has to have enough abilities relevant to its role to make it interesting to play, which isn't going to happen with WHM because it's got too many healing abilities and too few of anything else.

[Giarc]

which is why you're not going to see 2 jobs of the same role off of the same class

That's basically my point. CNJ can't turn into a DPS or Tank without massive reworks to the base class skills. So if there was going to be a second job from CNJ it would almost have to be a healer. It'd end up being more of a token Job just to make things "even" if all other classes get a second job. I think SE backed themselves into a corner with the way the armoury system functions and it sucks that some interesting Jobs may never be introduced because of it.

[Kitru]

So if there was going to be a second job from CNJ it would almost have to be a healer. It'd end up being more of a token Job just to make things "even" if all other classes get a second job.

Which is why it's almost guaranteed that CNJ isn't going to get a second job. Keep in mind, that it's pretty doubtful that even a majority of classes will get multiple jobs. GLA has too many tank CDs and too few attacks to become a viable DPS that isn't just a single combo spammer, ARC only has ranged attacks and DPS viable CDs so it's not going to get a tank or healer job, THM has Astral Fire and Umbral Ice as a fundamental mechanic that would need to be completely and utterly reworked to such an extent that whatever healer they turned in to would be completely unlike the base class, and CNJ has way too much devoted to healing to ever be anything else.

I honestly believe that multi-job classes are going to be in the minority as opposed to the majority, so I doubt there will ever be a need to give a class an extra job arbitrarily. MRD could feasibly be given a DPS job, and PGL/LNC could be turned into tanks without a massive amount of modifications (mostly converting +dam mechanics like Greased Lightning and Heavy Thrust into mitigation mechanisms, putting high enmity modifiers on attacks, and removing positional requirements to attacks), but, even then, there's some question as to whether they would ever get it (with the 2.1 changes, MRD definitely has more tank CDs than a DPS should have which likely precludes it from ever getting another job).

Even so, if classes with multiple jobs become the majority, I don't really see the devs investing the effort to give another job to a class that's just going to have it do the exact same thing as before. Yoshi has already said that they're only going to include classes that fulfill a vacant niche, and adding another healing job to CNJ doesn't really do anything of the kind.