A lot of this information is repeated from the Princess Irulian Naration, So you could tag this 2nd Intro on the end of the other in a way so that you cover all the information but leave the bit out about the Benegesserit and Quizat Haderach. Because this other Intro introduces the Fremen Earlier but also talks of there Vision of the Prophecy.

So I would go with we know of Choam and the emperor and that they are the secret but then move straight on to the prophecy cutting out we know of the Benegesserit and leave all that information to Princess Irulian.

But yes striking Images is what is needed and Big powerful visuals. When you Cut to The Fremen Lady And see she has Blue eyes it will be cool you hear her voice and then are surprised by her difference in appearance.

This would act then as more of an intro for what is to come rather than simply information it set’s up the film for having “The Sight” or being able to see the future before it happens.

In the DVD Documentary they Have Rolling Shot of Sand 50% opaque over a Starfield… This is obviously one of the Missing Shots how you convey the Sand is like the Stars. Play with Transparancy and Opaque Visuals with Stars and the Desert.