Looks like I will be posting the first bug/exploit lol
In Northern Thanalan, East of Ceruleum Processing Plant there is a fate that spawns called "Dark Devices - The Plea" Level 45+
Dark Devices The Plea - Fate - Final Fantasy XIV : A Realm Reborn (FFXIV ARR) Database
The exploit is that the mobs continue to spawn once they die, in 10min we had a chain of over 300, gained almost 100k exp. Just have non aoe members pull mobs
The trick is to NOT have people touch the mines to progress the event. You if you can sit in a group and AOE I would imagine you can easily pull in over 150k in 15min.
I should add, the more aoe you have for this, the faster the exp comes, we only have 2 blackmages atm and we are currently only getting 50-60k per exp in the fate, besides the 8k you get for completing, and the 3 chain fates after it.
I am not sure if this should go in Elite, feel free to move if needed.