Yeah. Hell, there were some awesome characters that were completely left out of the film (and I'm kind of grateful because I wouldn't have wanted to see them butchered the way Eilonwy was).

I remember even as a kid thinking The Black Cauldron was pretty horrible film, even completely divorced from the books. It was clunky and confusing. The only good thing about it was that the Cauldron-Born were made scary as hell.