I watched the Spicediver Redux tonight.
It's rather brilliant.
There are obviously problems that can not be navigated around even in a control room of spice gas.
But without having an Ady style overhaul this is the best the material is probably going to get (jump cuts aside).
I loved ADM's workprint cut and the Third Stage Edition but this is a major restructuring and almost every Fremen eye is painted now which is a mind boggling achievement on it's own.
Short of recasting the Harkonnens, removing the Weirding modules and doing most of the sandworms again I cant see this getting much better.