Two Gun-Using Job Ideas

[Duelle]

I just think that compared to White Mage and Scholar, your Chemist is missing some sort of Damage Mitigation skill (Protect, Stoneskin, Adloquium, Succor, Sacred Soil). A control skill like a Sleep is nice but I think it would be better on the class versus the job.

I personally wouldn't want to give gunner that type of utility. It just doesn't sit well with me.

I guess if CHM has to have some form of damage mitigation (though by design Stoneskin is a lot more inconvenient to cast than Adlo/Succor), I'd go the route of the drug whatshisname from the PGL quest smokes before he fights you. Another option would be a potion that restores HP when the targetted party member takes damage, though I wanted to save that mechanic for a different healer.

Another question I forgot to ask was what would your jobs cross-skills be?

That's kind of where I'm at a loss. Assuming CHM uses TP to heal rather than MP, it would make sense for it to cross class stuff off lancer (invigorate) and pugilist (mainly Internal Release and Mantra). Likewise Gunner would probably be lifting stuff from archer (Raging Strikes, Quelling Strikes) and lancer (Invigorate).

[Mimilu]

That's kind of where I'm at a loss. Assuming CHM uses TP to heal rather than MP, it would make sense for it to cross class stuff off lancer (invigorate) and pugilist (mainly Internal Release and Mantra). Likewise Gunner would probably be lifting stuff from archer (Raging Strikes, Quelling Strikes) and lancer (Invigorate).

For Chemist, I would think Pugilist and Conjurer. Conjurer's Cure would be a good thing for a TP based healer, seeing as they won't have any other use for MP (so long as they used Mind for healing). Plus you would also get Protect and Stoneskin. I would think Cure, Protect, Stoneskin, Internal Release, and Matra.
For Gunner, I agree, Archer and Lancer is the best. Raging Strike, Quelling Strike, Hawkeye, Invigorate, and Blood for Blood.

[Duelle]

For Chemist, I would think Pugilist and Conjurer. Conjurer's Cure would be a good thing for a TP based healer, seeing as they won't have any other use for MP (so long as they used Mind for healing).

This is the one point of combat design in which I am at odds with the developers. The devs have chosen to go by blanket rules for the most part, whereas I'm in favor of stat scaling per class. On that note, CHM scaling off MND would mean it shares gear with SCH and WHM, and I'm not sure I like that. I figured they'd scale differently. Like DEX when you are a musketeer or have the gunner crystal equipped increases your attack power. CHM would gain healing potency from DEX and a very minor increase to attack power, for example.