I would love to see the addition of a smart playlist for paired tracks, one that is less global and more track-specific.
When I am preparing a new (or old) track, I like to find other tracks that pair well with it. Some combos work really well together, and I want to remember them for future mixes. At present, I can create playlists to preserve this information, but traditional playlists are not what I really need. I need a way of linking tracks to each other, almost like an audio thesaurus.
If this were possible, there could be a smart playlist which, when you highlight or focus a particular track, would display all the tracks you have linked to it. Because the playlist is context-sensitive rather than fixed, it would simplify one aspect of playlist management. At the moment, I tend to commit pairings to memory, or a note on my phone. Neither are ideal.
Another way to implement this might be to add linked tracks to something akin to a comment field. The field could have a pull-down menu of linked tracks. Linked tracks could be loaded into a deck from the menu, and selecting one would jump to it, populating the same field with a new list of ideal pairings. I imagine it like a mind map.
Anyway, just an idea, but one that I would find genuinely useful 😀