The biggest problem with 13 reasons why is Pacing and characters. Most of the stuff in the show can be cut out and not change the plot. It probably could easily fit into a 3-hour movie. Also, Hannah's character does not make sense.

Some of the reasons she commits suicide are just plain dumb. Number 2 is the biggest offender. I would go into more detail but I want this review spoiler free. At least it tackles some grim themes but the execution is bad.