You should watch these fan-edited movie documentaries
There is a guy who has spent the last two decades releasing compilations of behind-the-scenes film documentary footage on Vimeo. His name is Jamie Benning, and he calls his videos "filmumentaries".
You can watch all his movies embedded on this page.
The ones I've seen usually take the form of the movie's actual footage, edited together with alternate takes and behind-the-scenes shots, interview VO, still photography, etc. in such a way that you are "watching the movie" in a highly editorialized way. So the "filmumentary" about Return of the Jedi is just the story of Return of the Jedi where basically every single scene is replaced with alternate or contextualizing footage.
It's a unique vision for what a "behind the scenes" documentary should be at all.
For example, during the scene where Luke's hologram addresses Jabba in RotJ, there's a smash zoom from Jabba's face in the original film footage to a series of behind-the-scenes clips of ILM employees fiddling with Jabba's eye rig. Luke's VO continues to play over this sequence, and at the end of the dialogue, when Jabba responds with a deep belly laugh, Benning cuts to a series of clips from the same studio, where ILM employees are now sculpting Jabba's face and mouth. "BWA HA HA!" Jabba shouts, and now we spend a few seconds watching his jaw distend. (Immediately after this, Benning edits in an interview clip of Lucas completely explaining how he embraced some pretty racist and fatphobic tropes in media in the form of Jabba, with zero self awareness. The whole video is a trip.)
You do feel kind of like you are "watching the movie" - but almost every shot is replaced or deeply recontextualized with video and audio drawn from dozens of different sources. It's a collage, found-footage way of watching the movie instead, focused entirely on creative decisionmaking, movie-making craft, and the labor of actors, art department members, and puppeteers. The running time is substantially longer than the original film, due to all the interview interruptions and additional behind-the-scenes footage added between various sequences.
For a long time, I figured that these videos were well-known to pretty much everyone online who cares about this kind of thing - but I really overestimated people's familiarity with weird Vimeo documentaries, so I figured I'd take some time to recommend them now. If you have ever admired the craft involved in any old Star Wars movies - or in Jaws, or Indiana Jones, the two other movies Benning treated to this style of video - I highly recommend watching these. (I haven't actually seen the Indiana Jones one (because I do not care enough about that movie.))
It's interesting to think of these as "fan art" because while they are, Benning's fan art is very, very different from what the average extremely online person generally thinks of as "fan art" today. It is much, much easier to find creative works created by fans than it used to be, and most of that stuff is totally focused on the fiction of the IP rather than the creation process or behind-the-scenes drama. This is partially, of course, because hunting for behind-the-scenes info is a lot harder than just drawing or writing about your favorite characters. You may need social connections or expert knowledge - which Benning obviously has. He works in sports broadcasting.
But I don't think the difficulty of creating this stuff is the only reason it's rare. Rewatching bits of these fan films has made me think about how behind-the-scenes footage only appears to me now as a kind of marketing. I no longer buy movies, so I no longer see DVD extras; I only see this kind of shit in an ad cut for YouTube. They're extremely shallow because they're trying to not spoil the plot of the movie. Nobody has seen the actual "special features" because nobody actually owns the movie.
When I was a kid, though, I watched the extras on my DVD of Master and Commander, like, a hundred times. I haven't done that for anything since Netflix started streaming.
All extras and special features produced about any film are very commercial, and they all bear the thumbprint of the IP owners very heavily, since they're a story that the company is telling about themselves. The reason there are so many little documentaries about Star Wars is because he rereleased those movies so many times! But they didn't used to be, in themselves, advertisements - more like inducements to buy the DVD. I can't imagine that the advertisement-type behind-the-scenes stuff made for YouTube will be as useful to the Jamie Bennings of the 2040s and 50s as the old special features of the past were to him.
Another, tangentially-related reason I like these old fan films so much is that they are not interested in the fiction of the Star Wars IP at all - nobody here is speculating about what the corporation will "do next" with Star Wars. It's always worth thinking about how a company embraces fan art, and what type of fan art they're likely to embrace and promote. It's usually fan art that "plays along," and continues the fantasy. A lot of the stuff that an IP holder will engage with is stuff that performs a kind of promotional fandom - the kind of fandom that makes the IP holder look good, and makes the media property look fun.
(It's sometimes hard to come to terms with the fact that the kind of fandom that people with my skills and interests tend to participate in - fan fiction - often does accomplish this for the IP holder. It's playing along. Even most of the sexy stuff.)
The filmumentaries contain discussion of Star Wars character motivations and behavior and plotlines, but that stuff remains in thematic or craft territory, not fan territory. It's much more traditional film nerd shit, and the creator sometimes feels as if he is more a fan of ILM and of moviemaking as a craft and a business than of Star Wars at all. Since completing his video about Jaws, he's made a handful of much more traditional documentaries about the lives of various creators who worked on 80s blockbusters - a puppeteer and two producers. Film industry nerd shit (laudatory). I haven't seen them yet and am not sure I will... but I appreciate that he's the kind of guy who would make this stuff.
Thinking about this has made me wonder: what do I value in a "media property"? It certainly isn't any conception of a fictional "world" as a "place" filled with "people". I don't read or watch things for the sense of reality they carry with them, but for the thematic impact they have on me. Their artifice - the fact that someone pulled this shit out of their ass, the fact that they came up with it and told me a story - is what's most interesting to me. I want to think about how they told me the story, and why.
Also... I have worked on large properties enough to be intimately familiar with the corporate brutality and creative bankruptcy involved in running any IP into the ground over the course of a decade or so. Any story which intrudes into your life serially over the course of decades only managed to do so because of a monumental bureaucratic struggle, and that struggle primarily monetarily benefitted some of the worst humans on planet earth - people who view artists as cattle, pretty much. To me, Star Wars represents absolutely the most exhausting example of this. Every shot in every bit of Star Wars media is, to me, boot-flavored, including every shot in Andor - which is so clearly engaged in a Struggle With The Boot that the boot becomes impossible to ignore.
Because he himself works in film production, Benning is obsessed with the labor of the creators - people who were less interested in the fiction than they were in how the fiction was realized. These videos are absolutely fascinated with the labor of filmmaking, and with and the management and creative leadership jockeying behind every choice. The type of fan who sees a movie and immediately thinks "I want to know how they made that" is the type of fan most similar to myself. The type of fan who wants to recreate the movie in such a way that the artist labor is center-stage is incredible. It's like he found a way to push the fiction of Star Wars below the surface and drown it. Incredible. To me, personally, this is massive-brained shit.
It's good, I think, for people to treat stories like what they are: stories. If you are going to be a fan of anything, I'd personally prefer you to at least be interested in the work of the people who made it, and sensitive to the reality of that work - willing to dispel your fantasies not only of the fiction but also of the labor. I cannot bear a relationship with an audience who thinks of my stories or my characters as somehow real - but does not think of me as real, or even wonder what the reality of my work was like.