To what extent is working on writing a screenplay for a purposeful film that contains scenes "common in Egyptian films" permissible?

Current movies and TV series, with their display of immodesty (tabarruj), intermingling (ikhtilat), and corruption (fasad), are not permissible to watch, nor is it permissible to aid in their production in any way. One should turn towards writing beneficial stories, for the gate of sustenance (rizq) is wide, and Allah's sustenance should not be sought through means that incur His wrath.