I always liked the challenges, so happy to get one again, I guess they are no big money earners for Inno, so they now only use them for special occasions like this one. Also intersting is that they kind of mixed the challenge with a mini event into one thing (the prize would be a typical mini event prize)
The prize, well a carting library would have been more useful for sure, but at least the idea of a pop/cult hybrid as a challenge prize is good (feels more valuable than a 2x1), maybe next time they give it useful stats? Like this it will unfortunately never get a place in my city, except for maybe a situation when instant pop is needed, just to be deleted again asap...
Double production day? I don´t have factories worth mentioning anymore, at least I still have the 2, I put in for the event lol... but anyway, will be nice for small towns.
I don´t mind having the FA a week later, I do love them, but when it comes to FAs I think less quantity and more quality is the way to go. 1 every other month was perfect. It feels like mass production now, rather than art