Film Sequels?

[Combwork]

Apparently they're going to make a sequel to "The Wicker Man", not the US version but the original. Not sure how this can work seeing as how they burned the 'hero' alive at the end of the film but it got me thinking about unlikely sequels, or different versions of the original. How about "Titanic, the alternate ending". Pure fantasy; ship hits iceberg but though badly damaged manages to make it to New York. How would history have been changed if all those rich, famous and above all influential people had survived? Would the Great Depression have happened and if not, with no industrial collapse followed by Roosevelt's 'New Deal' would the future have been much different?