So far, I like some of the improvements of the new reader although I do feel like some improvements can be made.
First, I like the autoplay feature. I recently broke one of my wrists (which, of course, happened to be my fap hand), so the addition of this feature has been helpful (it's tricky to jerk-off and turn pages with one hand and not feel interrupted). However, I feel that even on the slowest speed, it seems a bit too fast especially on dialogue heavy pages.
I feel that the ending page could have some improvements. For instance, it could recommend other chapters such as those from the same artist, those that are in the same collection, or those that are in the same magazine.
As others have said, it would be nice to have the chapter name and artist at the top like in the old reader. There's also the fact that there doesn't seem to be a way to hide the cursor, overlay, and scroll bar all at once. I've also been getting some white space at the bottom of the page on occasion when going fullscreen. Here's a screenshot of it: