This was definitely a great addition. New enemies that aren’t overbearing without counterplay, a boss with new strategies required to win and most importantly, the expectation that you can always beat him.
The vault was whatever. I usually don’t get much value from the vaults so I’ll leave the concerns for people who know them better than me.
New story, with lot of humour, new enemies, new strategies…
You even made a 3* I would like to have!
And I got “so many” tokens I can’t wait to re-play this with a vault!
Great event, even if the 3 paths were quite the same 
Good job! 