I am really impressed by the SQ of your linux distribution with MPD player v17 on my top level system (Goldmund, Grand cru audio), better than tinyMPD (a nice performance) and much better than Daphile and others...
If you can add this functionnality directly with MPD, it will be an huge step for your distribution! (for your information, it seems TinyMPD use bubbleUPNP server to add UPNP possibility, afterward it is easy with a control point like Mconnect/bubbleUPNP to have access to TIDAL, QOBUZ, and various clouds)
Finally, the overpriced ROON will be kicked in the ass with your job, for sure

Many thanks!