"I feel like your average user who needs this type of functionality can create it with categories and sub categories and the one who doesn't feel fulfilled by that functionality can go out and find a plugin that make the process of creating CPTs and custom taxonomies easy. Like: https://wordpress.org/plugins/... . The real problem is that CPTs are handled as discrete display units with potentially different templates, you're going to need a dev to make those, one way or another." - Aram Zucker-Scharff