I love my Arc/Sub/SL system and wish there would be further Sonos Radio programming.
The Brian Eno“Lighthouse” stream is a monumental package and shines in the dimensional opportunity for the sound system. (Aside: what are the intermittent “chimes” that occasionally pop up between pieces?). Great depth. Perhaps other sonic artists could be approached : Tipper; Reznor/Ross, etc Also, a library specific to larger than stereo mixes. A bunch of catalogs from every style have experimented with the possibility. Sonos could bring them together.
The Sonos Radio guest dJ streaming mix series (Thom Yorke, Bjork, etc), are a gas. When will the offerings be expanded?