I personally find it more fun that gardening, crafting, PvP and the pet races, but that's just my opinion. As it only came out like a day or two ago, I wonder if anyone's finished all the fishing quests there are. Probably some crowns players willing to refill their energy, come to think of it.
Anyway, I really, REALLY like this update, and I can't wait to see fish in all worlds of the spiral! (I haven't seen any fish in MarleyBone, so I'd advise maybe making an MB version of the River Thames or something).
Also, Crab Alley needs fishing. And I mean a LOT of different varieties of fishing.