I would like to request a more consistent way for naming gear and items. And I was actually surprised to find this as well:
http://eu.finalfantasyxiv.com/lodestone/playguide/db/item/d1304252965/
Accessoires have become a prime example of how it's been done right after the First Binding coil of Bahamut.
of Fending => Vitality
of Slaying => Strength
of Aiming => Dexterity
of Casting => Intelligence
of Healing => Mind
As for the left side gear, there seem to be quite some inconsistencies here and there. Lancers and Dragoons traditionally got access to the "of Maiming" line of gear. Yet as the above example shows, it has a set named "of Slaying" which might suggest to others that are used to consistencies to think any job using Strength can equip it. With only the next example being an exception.
http://eu.finalfantasyxiv.com/lodestone/playguide/db/item/355c9a2f6be/
So the General scheme for left side gear we're used to seeing is
of Fending => Tanks
of Maiming => LNC/DRG
of Striking => PGL/MNK/SAM (pre-i115 ROG/NIN)
of Scouting => ROG/NIN
of Aiming => Ranged Physical DPS
of Casting => Casters
of Healing => Healers
Now here is one example of some inconsistency. ROG/NIN gets access to Aiming accessoires, but not the gear? As they are exclusive to Ranged physical DPS, I would suggest changing the line to "of Ranging". It was applied once, but the term was changed back to "of Aiming". It was the Bogatyr's set. I would like to see that applied again to make Ranged Physical DPS gear distinct from Scouting gear, where Aiming indicates any jobs that use Dexterity.
So we'd have these lines:
Fending + Fending
Maiming + Slaying
Striking + Slaying
Scouting + Aiming
Ranging + Aiming
Casting + Casting
Healing + Healing
And then we do have generalized sets.
http://eu.finalfantasyxiv.com/lodestone/playguide/db/item/99094a443f5/
This is a nice example. "of Sorcery" would indicate any Disciples of Magic can use it. Maybe a line "of Battle" for Disciples of War would do?
As for the requirements information on items. Maybe apply those that were added for Role abilities? As a quick example, I'll pick this:
http://eu.finalfantasyxiv.com/lodestone/playguide/db/item/c4aec3a06fd/
It's requirements are GLA, PLD, MRD, WAR, DRK (All tanks) LNC and DRG. Or we could pick on the ability Invigorate. PGL, LNC, ROG, MNK, DRG, NIN, SAM (All Melee DPS), ARC, BRD and MCH (All Ranged DPS). Maybe condense those down to say "Tank role, LNC, DRG" and "Melee Role Ranged Role"? It would be a quicker summary to get the idea across that it should.