(summary: around rank20, you pick your weapon of choice from your class Guild, and upgrade it with several different quests and trials to level it up along side your class/job. The main goal of this system is customization and progression, along with a feeling of attachment for your weapon)
Everyday people around Eorzea toss aside old weapons without hesitation as soon as they become obsolete, this disheartens me. "But it is just a piece of metal, who cares!" As true as that is, a large theme of XIV is weapons. They shape everything about us, our classes, our fighting styles, our game logo, our strengths and weaknesses, and how we fit into and contribute to groups. Yet I am no more attached to my sword than I am to my green undershirt.
With that in mind, I humbly request some consideration to a system similar to this: "Stand by Your Sword!" (I only say sword because I love GLA but the basic idea should morph pretty well into all classes/jobs and weapons.)
As for the system itself, if I had to relate it to something I would say Trial of the Magians from XI, only deeper, more robust, and more personal and specific to the classes/jobs. Using GLA as an example here; upon completing the r20 quest and getting a feel for your job, the Colosseum asks you to choose a weapon of choice for your base weapon: Dagger, Falchion, Short Sword, Long Sword, Wooden Spanker etc. Of course the truly devoted can pick more than one if they wish. And those with limited time or care for the class can ignore this feature completely. Upon picking your weapon, you can choose a multitude of quests/tasks/trials to undertake to strengthen it and morph it into your personal and ideal weapon. The rank requirement will gradually increase as well, so the weapon literally levels up with you if you stay vigilant to the trials. (Side Note: being able to rename the weapon along the way would be a pretty nice addition too!)
[Quest/Trial Ideas:]-defeat a certain number of a specific enemy with weapon in hand (flans/elementals for elemental attack/defense upgrades, large enemies for attack upgrades, small fast enemies for speed upgrades, etc.)[Upgrade Ideas:]
-take a certain crafted weapon outside and wear it down to 0% durability somehow, then use it as a sacrificial item (perhaps the NPC puts an enchantment on it to make it untradable and increase rate of wear too)
-complete certain class quest for the corresponding upgrade you want to work on (ex: to get a strong elemental attack on your weapon you will need to clear a few CON quests, or for a slower stronger weapon complete some MRD story quests, PGL for a faster weapon and so on)
-collect and turn in a number of a specific item/currency (this one is vague and has lots of options. turning in enemy/NM drops, beastmen currency, crafted items, guild marks etc)-elemental attacks/ higher damage/changing and enhancing weapons damage property(slashing/piercing/blunt)/augment specific class+job abilities/ unlock new skills(this one might be too much..)/ latent abilities for just having weapon equipped (regen/protect/spikes)/ multiple attack properties/ more "materia" slots? and stuff like thatPros: hundreds of hours of seemingly player made content/ something fun for new players to a class+job to mess around with/ something for dedicated r50s to go out and do on their favorite classes, since exp grinding isn't much of an option. Also for the r50s, once jobs are released it will be a great opportunity for them to experiment with the new specialization and still feel like they are working towards something/ can also be a gil sink and item sink and a use for all those random useless items some of us have saved through the months/ and the biggest pro in my eyes, a sense of accomplishment and progression
Cons: might marginalize weapon crafters (which I am!)/ could make people without the time to get their personal custom weapon feel gimp compared to others/ also it doesn't fit well into DoH and DoL tools, so people dedicated to those disciplines might feel left out
EDIT- additions copied from posts;
The idea could possible bleed over to DoL DoH, with just a little bit of dev magic and creativity. The upgrades probably wouldn't be as bountiful! but still definitely room for something. Like a leather-worker whoms only passion in life is making high quality subligars, they could take their knife along a path with increased HQ rate on pants or something. Gathering would be tricky, I don't gather myself so don't know the system at all, but I am sure there are plenty of possibilities to keep them involved
ex: @r20 you start with a rusty piece of metal that only resembles a Falchion. After a few quests and hitting r30 with it, the guild reforges it and it shapes a hilt and kind of has a blade. By r50 it resembles a true final fantasy weapon! and is toothed along the curved blade, yields a jeweled mysterious looking hilt with a guard, crazy transparency differences all over the place, and so on. Changing the aesthetics of the weapon based on the quest paths you choose would be great, but probably too complex (but I'd love if certain parts of the weapon changed colors to match the element property you chose, or a multi-hit weapon had two blades! etc) . But making like 4-5 different upgraded versions of each base weapon couldn't be too crazy of a task