As the title says, there are 2 Events I think they should be permanent:

1) Guaranteed Enhancement/Upgrade Materials from World Bosses!

2) [Event] Faster Crafting! Ornette’s/Odore's Spirit Essence! [Extended!]

A source for Oquila crystals/catalysator for enhancing Jetina Armor/accessoires makes this worth again. Not the weapons, they are much too exprensive (too many shards & memory fragments) compared to market prices. 

And the spirit essence is slow enough, even with this events.

So please make these permanent!

Please do it. I need more Oquilla Crystals for my second account & want the Spirit essence. Those quests hurt noone if they are kept.

And: The first part of the Boss Event were worthless, because nobody made bosses the first few months of the period so you got too less Oquillas...