i don't know if this is planned for 2.1 or not, i have heard only rumors and didn't see it on official post. but i really think that dungeons should give more exp so they could be a alternate way to leveling alts from FATE grinding.... grinding fates all day is very boring and dungeon grinds are a nice way to get some low level gear and vanity material.
maybe also work out those guildhest so they are not totally useless after the first time you run them