No tension
Spoilers...
The script and structure is so flawed it's hard to believe Tarantino wrote it. He saves any sense of tension to the last hour when I'd really lost all interest. If he'd simply opened with the gang taking over the haberdashery that would have at least given some tension and purpose to the film and validity for the Hangman's paranoia and distrust of others.
There was reams of dialogue that added nothing of interest to the characters. With Shutter Island you watch it again and see nuance in character dialogue and actions. In this film Tarantino by and large just wrote it to hoodwink the audience without any clues or realisation of duplicity in the second viewing. I can only remember one.
This film had bags of potential. Shot well, good score and well acted but it's weighed down by unnecessary, pointless dialogue that adds nothing to character depth, relationships or drive to the plot. For me this is one of his worse every films that's OK to put on in the background but a relative bite to sit down and watch.