As far as movies that could've used a better sequel, I gotta mention Hellraiser 2. The first two are perfect, and I actually really enjoy most of the sequels, but I think ideally they should've gone in a different direction after 2. Introduce a new cast of cenobites, completely do away with Lead Cenobite, have it be completely disconnected from what came before, and just do something new. But alas, they had to have an iconic recurring mascot, and be more like other horror movies of the time, and blah blah blah. Hellraiser 3 sux. I mean maybe a big Nightmare on Elm Street fan might get more out of it. Who knows if 3 went in a different direction, if it'd be like Halloween 3 where the next film reverted back to familiar territory, or if it'd continue to spawn unique films.