Why do they keep making capeshit when the greatest comic book movie of all time has already been made?
for true comic adaption (ie not very good without reading the book) there's the ultimate cut
for best cinematic version, directors cut (ideal)
for people who want to save 20 minutes / don't care about their experience too much there's the theatrical cut
i would watch the directors cut first then if you enjoy it, read the book. then watch the ultimate cut.
The only arguable problem with the theatrical cut is the absence of The Adventures of Pirate McGee - but despite what purists will tell you, its never been essential to understand Veight's character.