Know your genre/tone and your audience. This is the thing. If you don't know what your genre is, what tone of your goals, or what your audience wants, then trying to create a variety of characters can be a huge disadvantage. The reason is obvious. You can take help from
book writers. Certain types of stories and audiences prefer diversity, while other types of stories and audiences don't like it much. Well, this may mean that the time is ripe for female gangster movies and TV shows about BAME pensioners ... or maybe no one cares. Which would you be? How can I know? Understanding the threats and opportunities that may arise when creating drafts will help you identify them. This may mean the difference between creating a symbolic and hardworking character that feels inappropriate and creating a character that feels real and authentic.