(Short rant, you have been warned)
I heard the teaser, and why is it so addictive, like the beat has been stuck in my head, I found the choreo unique too, they do it effortlessly. I also like the style of the teaser, and how they are promoting it. Especially with the lantern background. I also understand that this is not their usual concept, and a little break shouldn't hurt their momentum, since all of the recent hybe groups have been using a similar approach. (which i don't like tbh)
Also a side note, I am not an illit fan, and the wonhee hate makes no sense to me now, I see her dance in the second part and the first thing I notice is how good she is. When I heard the critiscism on she couldn't dance I thought it would be bad, but my girly here is eating it up! Either she improved like crazy, or she was never as bad as they claimed her to be.
Edit: listened to the song, it is fun! It didn't feel empty to me. Could have been a little longer. Yunah, minji and wonhee were immediate standouts. But the con is it's going to be stuck in my head for a long time lol..