With these HUD options, we were allowed to do something really cool; Introduce the UI piece by piece for the new player experience so they aren't overwhelmed right away.
Pictured here you can see a brand new character on a new account. Everything is turned off until the player needs it for the first time. XP comes in when you first earn it, your skills and resources appear the first time you equip a weapon. Potions, mounts and recall spells appear once you've earned your first one.
This allowed us to create an almost cinematic like experience at the very start of the game.