Watched the stream, Justin @Cyan was saying that the purpose of this is so that the event is "simple" and don't require players to do Mushin's Tower or Candycloud park or whatever extra dungeons.
I should say, the intention is good to make it simple, but it is making many people impossible to do this event.
Having Mushin's Tower or Candycloud park or whatever extra dungeons are time-consuming yes, but at least they are do-able by *EVERYONE*
6 Daily challenges -> you need to do Dreamsong Theater/Cathedra Cliffs / Warped Citadel/Hard mode every day:
1. newbies definitely get kicked from those lobbies
2. veterans will not be able to do with most of their Alts (pros and cons whether you support veterans to do events on Alts-> how they farm the Vials free, without spending $)
For me personally, I will just skip this event, not worth *AT ALL* for 1 oil per week.
Less login time this holiday season then.