Lack of End Game Content

[ForteNightshade]

It's not just that. I would argue that even the current endgame content becomes outdated way too fast these days. Almost everything becomes roulette fodder one month after it gets released. Why not have the current extreme trials have drop higher gear when they release the third one (ShB end boss Ex trial)? Maybe increase the damage a bit or add a new mechanic. Why isn't this a thing instead of the constant tombstone, roulette treadmill?
As brilliant as ShB is, give me something to look forward to when I am max level with the job I main and love. They need to freshen up the end-game progression and also keep the current content alive way longer.

Because doing so would pull people away from the newer Extreme. Not to mention, a lot of people don't necessarily want to go back to Innocence and Titania for weapons a second time. While, in theory, they could do something to improve stat progress. A lot of it becomes an illusion. Lets face it, if they added a bunch of bonuses like 5% increase to whomever you tether using Dragon Sight or Geirskogul is reduced to 20 seconds. Theorycrafters will work out whichever is mathematically superior and the rest will be considered fodder. Horizontal progression "worked" in older games like FFXI because they weren't trying to balance anything. FFXIV, on the other hand, wants each job to feel both viable and balanced within its role. This tends to result in less interesting gear progression.

Could they balance bonuses enough that the differences were negligible? Maybe. I wouldn't envy the enormous workload that would put on the dev team though. Imagine having to make say, three full sets of gear for each job all within a hair of one another damage wise.