• Introduce Navigation Architecture Component and orchestrate the in-app navigation by using it
• Introduce Kotlin Coroutine Channels and expose the API response via LiveData
• Introduce Paging library and use it for pagination
• Introduce MotionLayout and apply some nice animations on DetailPage
• Use Room DB for the FavouriteScreen and persist the data
• Write unit tests for the existing classes
• Write espresso tests for the existing classes
• Introduce the latest UI elements from Android Material Design library and do some cosmetic on existing screens
• Apply some meaningful animations and share the best practice knowledge
• Try to find the best practices for tracking
• Use Firebase for Machine Learning
• Try to extract business logic to Kotlin Native classes

Each tab has a separate NavHost with own backstack.

• Each gradle feature module holds its nav subgraph that is included into the main navgraph located the app module
• Feature modules send navigation commands via an interface
• The app module implements this interface, maps navigation commands to global actions in the nav graph and executes them using NavController
• Module's fragments are internal and not exposed
• Feature modules do not depend on each other, only on the core module
• Module's fragments can use generated SafeArgs, because they own their nav subgraphs