I'm not a fan of the upgrade. The comment scroll list is as annoying as hell. I almost stopped reading someone's series because of it, which is awful, because the series is quite good and I wanted to leave comments for the creator.
I also find the design feels too cluttered. There must be a good in-between with all of these upgrades they've been doing. I like that they returned the episode list. Not a fan of the pop-up, that confused the heck out of me. I'd return the comments the way they were.