I don't want them tied to a relic, but I would like to see fate trains again like back in ARR for leveling. Fates in SB brought a really neat addition, I love the twist of fate buff and the exp buff from the maidens.

I still do fates at higher levels if I need a super small amount of exp, but it always feels like unless you have a huge group doing fates, they just take too long, especially if a few people leave because of the scaling.