Yeah - this is a hard one to drill down into. Going down one rabbit hole feels right in the domain you are looking at, but it throws up issues in other domains.
If OS domain was Manipulation. I was thinking that the Issue could be around Thought vs Knowledge
We see the passengers finally engage with their surroundings and each other.
The captain in interested in learning about the history of Earth.
It did allow the OS Problem to be Unending - which I thought was a good fit. The Axiom was not to return to Earth - it is to stay in space indefinitely.
Saying all that - the other choices it threw up didn't seem to work too well. Or not well enough on first look.
I haven't had a chance to delve into OS Domain as Activity yet. My brain is struggling enough as it is with seeing if OS Domain of Manipulation works at all.
I can see your point - and it is quite a strong one. I originally wanted to put the OS into Activity - but there are things that I struggle to work into that. I guess I am trying to work out how the recolonizing of Earth drives the conflict throughout the rest of the story. It seems to go unnoticed for pretty much 2/3rd of the film, and even the first time it is somewhat broached, when the Captain finds out that there is a plant - but then it is missing - he goes "oh well - back to normal".
I do agree that there is a lot of doing after the manipulation has been dealt with. Time wise, though it isn't a long sequence between AUTO being defeated and them getting back to Earth. I wonder how much of that was story weaving though.
Also, the going back to Earth was driven a lot by Eve wanting to get the parts for Wall-E. It was really only the Captain also wanting it that solidified that direction. (Does that make the Captain the Protagonist?).
I was thinking about seeing if we could clarify Eve's throughline - as that might help us work out some of the others. If she is a change character - what does she change from and to? That should link in with her Problem/Solution|Symptom/Response shouldn't it?
I will try to find some time to play with OS in Activity