I wish that:
- You could see who is connected to your library and you could see what they are currently listening to, and what they have listened to so far.
- That iTunes had a chat feature so you could chat with people who have connected to you, and you have connected with them.
- It might have this feature, but I haven't seen it, but the ability to serve a music stream, like Icecast does, but for your local network. So you can have a mic, your music library, and possibly additional inputs from other programs, so you can run a local network radio station. All within iTunes.