I often like to listen in comparative mode (e.g. same - classical - composition by different performers, or same performer / composer over a certain repertoire, etc.), typically streamng, and Roon search and ranking, plus immediate playback start at clicking play is sooo enjoyable.
That said, I am curious about XDMS as everybody else, and I will sure love it (based on TAS already critical performances) for critical listening or playing locally stored albums.
Once the main bases will be covered, starting from a consistently superior sound quality, stable functioning, gapless (or as close to gapless as possible) playback, polished and streamlined GUI, clean and accurate simple data search and presentation, etc., my most desired next implementations would be:
- partial track buffering for prompt playback start (buffering a whole track is too long of a wait in my use scenario, destroys user experience for example with symphonies where the gap from one movement to the other can be of half a minute or even more);
- streaming YouTube audio while watching videos on my laptop or tablet
- state-of-the-art upsampling (PGGB realtime integration?)
- intelligent search algorithm and search results ranking / organization
- state-of-the-art crossfeed (being mostly a headphones user)
I know I am a bit rushing ahead, but one can always dream, no?