In my opinion, I don't think all the new deleted scenes should be added to a fan edit. The new reverend mother scene for example basicly gives the same information that the normal intro gives. Some of these scenes where basiclly scenes that were replaced in lue of a shorter "second half" for dune, The water of life scene for example was to be very different and much longer.

The problem with DUNE as a film (at least in it's current form) is getting around all the exposition. The Fellowship of the Ring, solved the very same problem by creating the back story intro that we have, with out that intro, you would be further bogged down in ring history, etc. While the Prologue for Dune gives us a nice back history, it comes off as little more then a collection of narrated paintings.

If I were to do a fan edit "prologue" I would created a title scroll usuing that back story, but presenting it better.

Adding the Irulan extended intro would add a little more strength do the begining, but it would be nice to have more.