...I was wondering if there is any super long quest that isnt completely boring nor annoying but fun for those grindin nerds out there...
Tideborn quest chain "Coming of Age".
Start with Forbidden Pillar ("Strange Monument") received from your race elder.
Last part is not in "Available" list:
After finishing all, after killing second Tideborn Traitor next to those crabs,
go to White Sands Beach and find Emerald Moon. (Southwest of Tide City,
under those big mushrooms by the sea.)
In PWI you have to be lvl 61 for that last part.