I was super confused by the timelines at first, but I kept watching because it looks so cool and I love the characters.
The music is pretty bad, though. I almost stopped watching after the second episode because of that song, and it didn't get much better after that, but again, the rest of the show didn't suffer from the songs as long as they kept them to the closing credits and I could turn it off.
I still think the different timelines could have been done in a less clunky, less distracting way, but otherwise I'm ready for another season!