I don't like Limited Jobs at all, but this job could never exist in XIV as anything but a Limited Job and it might be the only way I'd ever get a magic tank. The One Limited Job to rule them all...
Freelancer.
- Weapon: Balls of light or something that's just a handle maybe. Manifests weapons of light corresponding to the job of whatever action you're executing at the time.
- Role action slots at certain intervals. Assign any role action from any job you meet the level requirement for.
- Job action slots at Lv1 and certain intervals thereafter. Assign any class or job action from any job you meet the level requirement for.
- Trait slots at Lv1 and certain intervals thereafter. Assign any trait from any job you meet the level requirement for.
- Limit Break chosen from the LB3s of any job you have unlocked. LB1 and LB2 automatically set to match.
Possible variations for implementation could be picked from these lists (not necessarily all from the same list):
Less restrictive
- Job actions that upgrade via trait cost only one action slot. The associated trait applies automatically without costing a trait slot. E.g., Glare costs one action slot and does not require slotting any Stone spells or Stone Mastery traits.
- Job actions that are granted as new actions concurrent with a trait (typically the first action that uses the job meter) only cost a trait slot. E.g., Afflatus Solace and Afflatus Misery would each cost one trait slot; further separate actions that require that trait, e.g., Afflatus Rapture, still require an action slot in addition to the trait slot spent to unlock the base action.
- Actions and traits assignable to any Freelancer slot, regardless of level. E.g., Magick and Mend II on FLR10 as long as you have BLM40+.
- Actions and traits assignable to any Freelancer slot as long as both Freelancer and other job are of equal or greater level than the action. E.g., Magick and Mend II in FLR10 slot as long as you have BLM40+ and FLR40+.
- Actions available from any job regardless of role.
More restrictive
- Job actions that upgrade via trait cost one action slot and one trait slot. E.g., Glare requires Stone action and Stone Mastery IV trait.
- Job actions that are granted as new actions concurrent with a trait cost one action slot and one trait slot.
- Actions and traits assignable only to slots of equal or greater level. E.g., Magick and Mend II only on a FLR40+ slot.
- Equivalent actions from different jobs do not stack. E.g., you may only set one of Sentinel, Vengeance, Nebula, or Shadow Wall at a time.
- Similar traits from different jobs do not stack. E.g., you may only set one of Magick and Mend II, Maim and Mend II, Increased Action Damage II at a time.
- You must choose a role, and all actions and traits must be selected from jobs of the chosen role. Role actions use the standard set for the selected role instead of being assigned to slots.
- Damage formulas adjusted down to limit power.
Partial sample build for a Freelancer magic tank:
Actions
- Fire III
- Fire IV
- Flare
- Freeze
- Enochian
- Defiance
- Flood of Shadow
- Heart of Light
- Vengeance
- The Blackest Night
- Hallowed Ground
- En Avant
Traits
- Dualcast
- Magick & Mend II
- Aspect Mastery
- Tank Mastery
- Enhanced Freeze
- Enhanced Enochian (grants Foul)
Role Actions
- Provoke
- Shirk
- Head Graze
- Rampart
- Arm's Length
(En Avant) > Freeze > DC Fire III (Enochian) > Fire IV > DC Fire IV > Fire IV > DC Fire III > Fire IV > DC Fire IV > Fire IV > DC Fire III > Fire IV > DC Flare > Freeze > DC Foul > Holy Circle > DC Fire III > etc, with oGCD actions in the dualcast windows as necessary.