You're making a few big leaps here. First that self-built playlists are an important feature for users, that people are actively managing their playlists, and t

You're making a few big leaps here. First that self-built playlists are an important feature for users, that people are actively managing their playlists, and that people curate while listening. Those might all be true for the majority of users, or it might be that you're an outlier. The only way to know is to actually sample real world users.