I'd love it if we had the option to do more stuff in the style of WT to get levels over the week. It doesn't have to be the exact same type of tasks or requirements but if there was something in every end hub like that for example it would not only make leveling easier by giving us more xp gain options but it would also give us more reasons to go back to older end hubs other than Idyllshire. Personally I'd like it if this was treated like custom deliveries, with different role bonuses every week. Sure it might make tome farming a tad too easy, but hey, if crafters and gatherers get it, why can't battle classes? They could even cap it at 2 turn ins per week like deliveries if that's too much of an issue, or if doing 4+ per week sounds daunting.
Honestly, to me it just makes sense that the leveling process should have more tools available the higher level you get. A quickening leveling experience would be a good reward for getting through the story and leveling up, and it would be a fair bit less boring than spamming either fates or dungeons, or just doing dailies.
tl;dr it's a good system give us more pls