I guess “essential” depends on what’s important to you and here are a few of the things (quickly from the top of my head) that were added:
- pets and taming
- completely new Dungeon
- new god and religion
- new world bosses
- new mechanic/station to take items apart and get resources back
- new archery mechanic including new arrow and damage types
- a way to gain more feat points past max cap
- new Bosses with new mechanics in revamped areas
- new weapon type with completely unique animation and status effects
- Combat revamp so you can duel wield certain weapons
- More unique PC camps around the map with the chance to spawn unique mini bosses
- new dropped items such as Legendary Armor with specific new stats
- completely new VOIP System on PC
- Roleplay improvements such as Dice Rolling, Bio etc
- New Purge Types
- New Monster Types
So, while we can always do better, no doubt, I feel “nothing” is a pretty harsh term for the hard work the team has been doing the past months 
I wish I could! 