8.5/10 for these reasons

Rating: 8/10 (7 October 2019)

Cons first
1) The musical score left a lot to be desired. Sometimes it was too heavy for the scene. Sometimes it was non-existent where the scene needed it.
2) The mob support seemed a bit far fetched. I know Gotham is crime central but I can't imagine all those people praising a murderer and actively helping him out.
3) The first portion of the movie was a bit long.
Pros
1) I love this version of Joker. I like his descent into insanity.
2) I like how this Joker ties in with the Waynes.
3) They explain why nobody knows his real name (his name is a mystery in the comics).
4) They have Joe Chill do the deed to Thomas a Martha Wayne (also comic accurate). I like how Chill was just a random Joker fanatic. Bruce Wayne is going to really come after Joker and that is exciting.