Before reading, keep in mind if you'd like:
1 - Class specific Uniforms to include 8 unique sets for Disciple of Hand, and 3 unique sets for Disciple of Land (Only)
or...
2 - City-State specific Uniforms to include 3 unique sets allocated for both Disciple of Land & Hand classes (Only)
OPTION 1
Simular to AF (Artifact) gear in FFXI, each Land&Hand class could be quested a special gear set tailored for specifics to it's respected class. Each uniform for that specific class can't be used for other classes, making it [Unique/Untradable].
OPTION 2
Simular to conquest gear in FFXI, specific City-State uniforms could be quested for all Land&Hand (Perhaps War&Magic) classes, unique in design via the City-State chosen during the character making process.
The idea is only classes are able to wear the "Class Uniforms" as if you were in school learning to perform better at the role. So jobs would not benefit from this gear. The uniforms altogether would have reasonably good stats through a long period of grinding to take the need to replace it after a short period (i.e. Class uniforms' stats would fall behind after Rank 20,30 or 50). Each gear set would be [Unique/Untradable].
Designs could stem from modern Japan schools with unique touches that compliment Eorzea's fashion. I wouldn't want to see sailor uniforms tossed from the idea, Scholars had such a AF/Relic "Uniform" that appealed to that factor.