The Level 50 Fisherman quest is supposed to be time-consuming, catching a Mazlaya Marlin after a double mooch. I needed 6 catches, that was kinda nice.
The Level 50 Botanist and Miner quests seem to be really annoying, only at fixed times of the day (same zone, but 30 real minutes apart) and I didn’t find more than one now. meh.