You might want to spoiler code that since you're got some pretty MASSIVE spoilers in there for people who haven't read the books. I skipped over half your post since I haven't read anything beyond the first book.
You want me to spoiler code comments about a book that was published in 1965? (parts of Messiah and Children were being written at the same time that Dune was) Or rather half of it? Sorry, but I don't have my copy of
Dune handy to know which page the movie stopped on. I just read the spoiler rules for this forum and it says six months from the first airing of whatever. Well, it's been well over six months since Dune Messiah and Children of Dune were published. FFS, it's been over 25 years since Chapterhouse was published. Dune Messiah does not exist on film except as part of a TV miniseries that aired in 2003. So again - well outside the 6-month rule, and no theatrical movie has been made of it.
Even the TrekLit forum isn't that strict. And a certain someone in this thread very kindly spoiled THE FIRST THREE EPISODES OF THE NEW SEASON of the
Handmaid's Tale just
hours after it had dropped on Hulu, blithely ignoring my request to take into account that not everyone got to see it at the same time, or even the same day. He carried on spoiling the entire season like that. So to the person who "liked" your post, pot meet kettle.
I strongly suggest you read
Dune Messiah and
Children of Dune. ASAP. It is impossible to adequately discuss Dune without referring to those novels, as they are the ones that tell Paul's story. At least the ones by Frank Herbert. If you want to include the bullshit that was made up by KJA/BH, add in Paul of Dune and Winds of Dune and House Corrino. And avoid the
Dune Encyclopedia, since you might actually read the real story of the Butlerian Jihad, which is nothing like the crap in the Legends books.
For that matter, the entire six-book series has been discussed numerous times by numerous people in this thread. Do all of us have to go back and spoiler-tag our posts?
Besides, Villeneuve has demonstrated his willingness to just make shit up, maybe nothing I mentioned will be in the second movie. And if he gets the go-ahead for the second novel, maybe he'll just make stuff up for that as well. After all, Frank Herbert originally wrote a different ending for one of the characters but (thankfully) changed his mind. Maybe Villeneuve will choose the original ending, rather than the canon one. Given his changes so far, it wouldn't surprise me (see, not saying who, what, where, how...).
Presumably aside from the material she has in the book they'll put her in scenes where she may not have appeared but it would be perfectly reasonable for her to - like leading attacks and smugglers and Harkonnens, for example. Not unlike Arwen, really.
I assume you're referring to a female character in the LOTR movie, who I know about vaguely, but not much, since I haven't read the books or seen the movies so I have no idea what you're talking about?
Shall I run around now, complaining about spoiler codes on your post, for a set of movies that came out years ago and books that came out decades ago?
Actually, what you're suggesting would probably be reasonable in most action movies, but not when it's something that doesn't mesh with the in-universe culture. Yes, the Fremen women are fierce fighters, and will even sacrifice their own children if it means the result is a dead Harkonnen. But leading attacks on Harkonnens and smugglers? If that shows up, Villeneuve will once again be making stuff up, for the benefit of an actress he likes but for plot points that are not in the novel he pretends to be faithfully following.