Not being able to play local mp3’s Or even CD’s ripped through iTunes is a deal breaker for me.
"HE-AAC (V1), AAC (16 to 320 Kbps), protected AAC (from iTunes Store), MP3 (16 to 320 Kbps), MP3 VBR, Apple Lossless, AIFF, WAV, and FLAC"
Not having to go to your computer and enabling AirPlay and selecting an album is kind of the point of a home assistant ;).