i thought it was an excellent film,i had a passing interest in joy division around 1979 and up to the mid 80s.
Since watching the film twice i've listened to every song they released,and they are not as depressing as i used to think they were in 1980.
Some of their songs were full of originality,the very early punk stuff by Warsaw was fairly poor though,and they were just copying in those first few songs what was popular at the time,other banRAB,including the buzzcocks,x ray spex,penetration,the adverts,the damned,the ruts etc..,were making a better job of it,basically joy division weren't really cut out to be an ordinary punk band.