Original Dune is vastly more widely-recognized and, frankly, better liked than the Herbert/Anderson prequels. Couldn't see any large number of people wanting the latter in t.v. show format.
The 'new-school' Dune stuff might not be as popular, but a series based around or incorporating elements from it would be able to find an audience, especially if it had a good creative team behind it.


I'd definitely recommend it to all my fellow Dune fans here.