Adjust weekly gear and tome limits from per player to per role.

[Jojoya]

Initial endgame gear roles in ARR:
Tank (PLD, WAR)
Maiming (DRG)
Striking (NIN, MNK)
Aiming (BRD)
Casting (BLM, SMN)
Healing (WHM, SCH)

Current endgame gear roles in Dawntrail:
Tank (PLD, WAR, GNB, DRK)
Maiming (DRG, RPR)
Striking (MNK, SAM)
Scouting (NIN, VPR)
Aiming (BRD, DNC, MCH)
Casting (BLM, SMN, RDM, PCT)
Healing (WHM, SCH, AST, SGE)

Despite all the new jobs added since, we've only had 1 change in role gear - the addition of Scouting.

While it's true there's a lot more weapons to collect, I doubt most players are using the top tier endgame tomestones to acquire all their weapons since that would also require completing the final raid boss of each tier weekly (unless they're also doing Savage). They're mostly getting their weapons from other sources, such as the relic quest once released.

You're going to have a hard time convincing the developers to make a change when they're basically giving away the only job specific gear for free and the number of roles sets has only increased by one with players not expected to play every role.