Related to adding the option of vinyl into an all-digital Meridian system, I saw over on their forums that PS Audio are about to release an interesting product - the NuWave Phono Converter. They say it will be a high quality phono preamp with 192/24 output to PCM, or USB or DSD via I2S. Sounds like it could be interesting if they manage to pull it off.

Roon Nucleus, Raspberry Pi + HifiBerry DIGI+ Pro, DSP3100.
Also another Raspberry Pi running Roon extensions with a Griffin PowerMate controller.
Unused: MC200.