For me, Roon bridge being usable from Sooloos to allow use of USB DAC (such as Prime), I think. It may require full Roon though which would defeat the object for me.

Meridian owner since 1992
Prime & PSU, Focal Elear headphones, Roon (ROCK 8Gi5 NUC), Explorer 1 & 2, F80. 200/203, various Sonos (via Roon).