While I do understand that a new job is a hallmark, and perhaps even a selling point, of a new expansion, I think we should until 7.X to add a new job.
I love this game, and with all due respect to the team, I appreciate that they do their utmost to try and give us the best experience they can. However, I do not think that the 2-minute burst window and current direction of job design will survive long-term.
It gets increasingly stale the more we play with it, as it results in jobs feeling same-y, and leaves little room to design jobs in their own fashion aside of their own aesthetic.
I have only been playing the game since a little before Stormblood released. While Shadowbringers combat wasn't inherently bad, and had some good job adjustments(nin for example). It feels there was a lot that got unnecessarily removed in part the big streamlining and homogenization when there could have been other paths to take. (some jobs more than others)
The big examples being tanks and healers. I'll mention the things I'm most familiar with.
Tanks are overglorified dps since enmity management was removed (I would rather it be a personal responsibility, not so much as it was everyone's before). Enmity management, if flawed at the time, at least made tanking feel rewarding. You were tanking, rather than the person who just came in with a button that makes your role icon blue instead of red.
Drk's kit since ShB has been a shadow of its former self. you press living shadow and forget about it, you don't even need to pay attention to darkside because flood/edge is in your rotations and there's no ability that costs darkside. DA is now proc based and damage neutral at best.
Honestly, we've seen enough healer rampages to know what the complaints are and they're likely to turn up in this thread. I agree with the large majority of them.
Kaiten is gone. healers having a bit more dps buttons in their kit is gone. DA and darkside might as well not exist and DRK, despite having absurd burst dps feels shallow. Enmity management and stance dancing, for better or worse, is gone. I've been seeing a lot of flavor go in favor of simplifying most jobs down instead of merely improving upon what's there and going from that.
Simplification is not always a good thing. I think we should take a step back and have the jobs' combat we have now be worked on and modified where needed first before having another job released, because the direction it is going I don't feel is a good one for the longevity of battle content. Not every job or role has to be for every person.