Hey Warner Brothers Make a Documentary about all "Exorcist Sequels"

All of "The Exorcist Films" had major problems.  From Behind Schedule Problems to Post Production tinkering all of them had problems.

A well made documentary on the first film has done and it was a great documentary.   A follow up documentary on all the sequels would be a great film.  All of the dorectors have stories that can be told.

There is a huge following for anything that has to do with any of the "Exorcist Films"  If documentary would be great asset to add to have