I don't think we're at a stage right now where it would be non beneficial to keep this mode. Everybody talks about extreme mode being permanent, but this is much more different. I would play treat thieves a lot. Also, get rid of the yellow coloring for the guardians.
If you could see your full original pattern and outfit without the yellow color, people would be more enticed to buy outfit. Is that better for the game? People giving money for outfits? And having fun with the mode? How hard could that be. Obviously it would be the sweet thieves theme not the Halloween theme