Yeah, when I say "director's cut" what I really mean is a LoTR-style extended version which includes all the additional scenes that had to be cut to fit within the confines of a theatrical release.
In the case of Dune Two, I'd argue this would actually resolve a lot of pacing issues instead of introducing them. Many parts of this movie felt overly rushed.
You could perhaps point to research that supports your claim? Would be better than simply talking down to people who disagree with you.
For instance: