How it's presented in the UI is roughly a function of how the underlying data is structured and manipulated. You can put in a lot of effort and construct a different view on top of a data model that "wants to" be seen in a different way (Delta Chat being an example of this on top of email), sure. But it increases the complexity of the implementation and makes the abstraction thicker, making iteration harder and introducing space for users (and onboarding developers) to misunderstand how things actually work.