I like a lot of this, seems like a good working list! I am definitely on board for

1) Better multi disk handling.
2) Better classical classification
3) Consistent functionality across platforms

I would add,

Integration with Rhapsody and possibly buy it now option. Search for ARTIST and it shows what you own and then what is available on Rhapsody and an option to add to play list. Then if you decide you like, you can buy and download.

Hardware ripping function. Taking a page from Naim. A box that let's rip a CD into Sooloos, without computer. A box that can handle volume, not the laptop drive in C10/C15.

Primary: MD600, MS200 (SpeakerLink to AES), Trinnov ST-2, Ayre V6-xe, Salk SS8 3x LRC.
Secondary: MC600 (whole house).
Zone one: 568.2, G57, MS200, Spatial Hologram M2SE.
Zone 2-6 (Awaiting assignment).