I believe xeno alpha 07 is working on a full Assembly, Workprint, Theatrical comparison which should be a good read once it's done.
Yeppers, I made a start a while ago. I'm working on it little by little when I get the free time. I'm adding video clips and dialogue transcripts which also take time.
Any idea on when that might be completed?
Not sure yet.
This page talks about some of the cut stuff, although I can't vouch for where they got the info from.
And xeno alpha 07's stuff is pretty thoroughly researched. I can't imagine he'd post anything he couldn't back up.
Main source of info comes from various magazines, books, scripts, interviews, behind the scenes material, documentaries, fans, etc. As well as from this very forum, (including you SM & SiL) and other forums over the years.