As an added touch, having these work across multiple monitors, a common staple in offices and workplaces, could bring the multi-colored visualizations to a new level in how they can work on multiple devices. The visualizations were a big drawer in previous versions, so to have these in an upcoming update would be great to see as you're playing the latest Kendrick Lamar album. Users remember logging onto MSN Messenger after school and sending 'nudges' to each other, and having some features be brought back to Media Player could be a nice touch.
Nostalgia applies to all types of medium - from television to games, and now apps.