Looks a little better, Eh nazo2771 ?
I wont need to USB ——> I2S since I access all my PC Music Server files PCM via my Sony Ethernet connected UBP-X1000ES. The DSD files are on USB memory sticks plugged into both my Sony AVR & Sony Transport and are accessible via DLNA (Ethernet).
As you mentioned. The Blue Boards I2S Out is DSD only and the Green Boards I2S Out is for PCM only.
Coax S/PDIF still need for 5.1 PCM files.