@expat those questions don't give any sort of serious blocker to a good AI adaptation. Even now people can give an AI a fairly short prompt and it creates a long answer with a load of extra stuff that it thinks belongs there. There's no reason an AI couldn't come up with its best guess at everything you are asking, just like a human can. Of course, just like a human (i.e. Rafe), not everyone will agree with all the answers.
The creative process would be long and intertwined with human(s) though. One day, far in the future, you may be able to tell the AI to create the show that will appeal to the largest number of people with almost no human input, or create 10 versions of the show that between them will appeal to almost everyone, and people can be directed to the right one for them. Maybe your AI assistant will even know you so well you get a personalised version.
Before that though, people will be prompting the AI and then saying "make Rand a bit taller" "this scene needs to be more emotional, I want tears in his eyes but he's holding them back from coming out, and a subtle look of anguish on his face. He's trying to hold it together and just about managing" "let's focus more on Logain's journey, I'm thinking we could show his capture, even though it's not described in the books." There would be a ton of back and forth and it would still be a very large project to get something the creator is happy with, but it would be orders of magnitude less expensive than it currently is, and the end result should be better because the creator has such fine control over everything. The final version could have more soul than anything created by humans alone and the only way to describe it as soulless would be if you were stubbornly deciding to do so rather than making an objective judgement on the final content. There would also be no issues such as not being quite happy with how a scene fits into the final version but it being too expensive to go back and film it again etc.
Characters could either be based on real people/actors who have given their permission for their likeness to be used (and been compensated for that of course) or could be created entirely from the book description combined with the AI and creator's imagination. First, this whole process will be done by the same people who are currently making movies/shows but eventually it will be democratised and people will make their own versions on something like youtube. The people creating the most popular versions will have channels like the big youtube stars of today. The people who own the rights will take a cut of the ad revenue from people who make shows out of their IP. When it becomes possible, why wouldn't they take the opportunity to monetise the IP in this way rather than spend loads to make 1 version themselves which will appeal to fewer people than the combined efforts of everyone who wants to do it.
It always amazes me when people say that some new technology is never going to happen because of legal or moral issues. A few years ago many people insisted that driverless cars wouldn't happen in the next 50 years because of the legal complexities of liability in accidents and "what will the car do if it has a choice between hitting an old lady or a young child" etc. We already have driverless taxis in multiple cities around the world. Name one technology in history that people wanted to use for something that would create profit but which has been delayed 10 years or more because of legal or moral issues. Right now we are discussing all this on the internet, which allows the most horrendous things to happen. Child abuse, encouragement to commit suicide, terrorist material, disinformation, cyber attacks... the list goes on. Yet we have the internet. Social media has most of the worst of those issues with rich and famous CEOs, yet they continue to run their businesses and make a ton of money. The idea that it will be technically possible to create superior tv shows and movies for orders of magnitude less cost, yet it won't happen because people are worried they might get sued is incredibly naive. If one company is worried about that, someone else will do it instead.