I want to feel a sense of achievement. These xp events makes the game trivial and achievements cheaper. Give us option to turn it off, or don’t have them is better 
I’m returning player and enjoying the game but the xp bonus burshes off game content. It because meeeh… and ppl will move on. Give us something to remember, not quickly level up and forget about the places we visited in the game.
tldr, give us option to turn off those horrible xp events the gaming industry seems to love 