The outright removal of the job system.
The job system is ultimately detrimental to the health and longevity of this site as it closes everyone off and packages them into isolated cells and disconnects all player activity into noncannonical little zones away from everything else, as no job is canon except in your own player history- if that, as you get up to dozens of people doing the same thing you did.
Having to register to do them, having to wait for a custom job to be looked over, having to stick only to those who were approved to go on it with you unless you wait to re-register someone else, and the commitment involved.
I recommend eliminating the system altogether. In its place, people register topics that they have already done themselves with whoever, whenever, and whatever.
You finish an Open topic in which you and whoever you wish do something, and then you go to a Rewards Center where you fill out a new Job Journal template where you explain what you've done, why you think it's important or something that you can learn from in some way,
who posted in the topic, how many posts each person did (and their word count), and a summary of what each person contributed.
Then whoever approves the job, as staff would have to do anyway, skim the topic and determine the individual rewards. Where a topic might have been comparable to a 100year for one participant, it could have just been comparable to an A or even D for another. This means that individual ranks could get their relevant rewards while the rewards could still "cap" to a soft limit for lower ranked participants.
NO MAJOR WORK NEEDS TO BE DONE WITH THIS. All the information on jobs are already available, and all you would do as a reviewer is match the rewards and effort to up to the highest possible job default that the player of their rank would normally be able to do.
Standard job rewards are used, you just play a matching game to match rewards with a request.
Along side this change you can also add in new variables:
Contested: Another player character is actively using their own character to try to claim an objective directly in contest with another player character's objectives. Such as: Saving a Noble, vs killing the noble. Or it could be a race to see who kills the noble first, who steals a gem first, ect.
Suggested benefits: All players involved get an overal 10% increase in rewards. The victorious party gets an additional 20%
Opposed: Another player or player character is passively serving as an opposition to other players, but they do not have the same goals or target. Basically a player just manages the threats that other players face, without having much risked themselves.
Suggested benefits: Similar to contested but with no "Winning" party exactly, as the objectives are not mutually exclusive, all participants get a 10% increase in rewards.
Series / Arc: Multiple topics share the same overall goal and underlying plot development that has progressed over the course of these multiple topics. The claim should explain what and why each topic is relevant and how they fit together. The reviewer could say that some of the topics don't fit well enough and wont apply to the total.
Suggested benefits: Add a 5% increase in rewards per topic that adds to the story arch. A massive 20 topic story arch would apply a 100% increase in rewards, meaning you'd essentially gain the rewards from each topic a second time in one "Series" bundle once the arc is approved.
I believe that this will make the site more active and generate more widespread involvement as players would be able to casually join and interact with whoever they want whenever they want and in whatever setting or goal they want. If Player A wants to do X with player B, they can just go do it as soon as they feel like it. When they're done they can register the topic for rewards matching with an appropriate default job level's equivalency. Player A might get more than Player B due to doing things more in line with a higher ranked job while Player B didn't do much, or vice versa, or perhaps they contributed on the same level.
The problem with the job system now is how it seems to close everyone off and limit options.
It should involve no more work than the system does now, but additionally it frees up time away from approving custom jobs and approving people to go on jobs in the first place (anyone can just up and go when they feel like it, or not even think about it and just go DO something and then think "Hey, this was a good topic, I should post it for rewards review" after it is done.