Probably not, but I'd love to see them.
Lore reasons most of all. But also maybe they could be challenging? Like the early level ones were next to nothing in difficulty, but perhaps once hitting 80 we could have this supremely challenging local non-instanced content.
I wouldn't even care about rewards and such, it's just nice to have more to do. In about 19 months from now I'll start the battleleve grind and well that's going to be duller than the level 1 fishing leves I'm doing now.