You said "I stand by my comment that the Foundation books would not translate well to screen without significant changes. "I stand by my comment that the Foundation books would not translate well to screen without significant changes. I didn't explain very well though, especially what I mean by action (see next paragraph). People have been trying to make the Foundation series into movies or shows for years without being greenlit. That doesn't necessarily mean anything but there's a reason so few shows have been based on works by writers like Asimov or Heinlein. They are difficult to translate to the screen (which means they don't make good shows without many changes).
I really like the books (I've read them several times and re-read them within the past 2 years) but they read like philosophy and psychology textbooks. There's little to no characterization or character development. There is also little plot. That's what has to be added and expanded upon. That will inherently introduce "action" in the sense that something will have to happen on screen. To make the screenplays good, writers will have to create character for the various book characters. They will have them do things. What little action or development there is in the Foundation books usually happens off the page. Action does not only mean Michael Bay -- explosions and fighting or chases. Action also includes character development and plot progression.
The closest sci fi movie to the Foundation books, at least in substance and style (e.g., cerebral), is Arrival. That is a great movie but it has more character development and other action than any Foundation book. The same is true for any Aaron Sorkin work, including the West Wing. The same is true for the classic Twelve Angry Men, which is mainly talking.
Even a book like Dune has been hard to translate for screen and that has much more action, character development, and world building than the Foundation series. What Foundation has is idea-building -- psychohistory, mathematics, etc. What they are missing is story building and character development. Both of those are things Aaron Sorkin does and generally does well. Anyway, that's what I mean the books will need significant changes and more action. People who want 60 hours of psychology or philosophy can take a university course.
You are 100% correct.