FATEs at 80 -

[Malmstrom]

But not the same amount of time. Presumably you'd be completing FATEs way faster in level 80 gear.

Also seriously, how many bicolor gemstones do you need?

Then you limit yourself to the monotony of being in one zone the entire time, since the Tempest is the only Zone that won't force you to level sync. That and the lack of combat music makes it get dull quick. I can jam out to that all day, and have while farming. Plus you illustrate my point my asking how many gemstones we need, because if you don't need that many, why do them at all? That's the issue. There is no incentive. There is nothing extra for doing it at level cap. I'm not even asking for something crazy, just something a little extra that makes it worth doing.

[Callinon]

Well I mean, that's kinda the problem. You can keep spending them on like, crafting mats and such to sell for money (less and less of it as time goes on) but after a certain point... there just isn't much reason to do fates anymore if you're not leveling anything. Heck even if you are I hardly see people out doing them anymore. There were a whole two of us (including me) doing a bonus xp fate in Il Mheg last night. It's kinda a shame.

But I'm weird and I like doing fates, so would definitely keep doing them if there was more incentive to do so once I'm done leveling. Heck, even adding more rewards to the vendors over time would be good imo. To help keep them from becoming mostly dead content if nothing else. Maybe more fate achievements or something too, idk.

Then you limit yourself to the monotony of being in one zone the entire time, since the Tempest is the only Zone that won't force you to level sync. That and the lack of combat music makes it get dull quick. I can jam out to that all day, and have while farming. Plus you illustrate my point my asking how many gemstones we need, because if you don't need that many, why do them at all? That's the issue. There is no incentive. There is nothing extra for doing it at level cap. I'm not even asking for something crazy, just something a little extra that makes it worth doing.

I do think it's ok for you to "finish" with certain content after a while. If you're done leveling and you don't need the gemstones, there are only a bazillion other things to do in the game that aren't leveling content.

As for additional rewards, SE actually did add some in 5.1. They may keep doing that as time goes on, they may not. But it's not really critical for every piece of content to remain relevant all the time.