Well, to write a good dramatis personae novel, start by creating well-defined and complex characters. Give them distinct personalities, motivations, and goals. For example, in 'Game of Thrones', each character is richly developed and their interactions drive the story forward.
Writing dramatis personae novels involves detailed character sketches. Know their backgrounds, fears, and dreams. A good example is 'To Kill a Mockingbird', where Scout, Atticus, and others are vividly portrayed. Another key is to make characters interact in meaningful ways that reveal their true selves.
First off, when writing dramatis personae novels, focus on character arcs. Let characters grow and change over the course of the story. Take 'Pride and Prejudice' as an example; Elizabeth Bennet's transformation is central to the plot. Also, ensure a diverse cast of characters to add depth and interest.