I could even think of a combination of UFX II/+ and your existing ADI-2 Pro FS R BE.
Use the ADI for monitoring (speaker, phone) and connect the other stuff to the analog outputs of the UFX II/+.
The quality is well enough (and the ADI-2 FS also does not support any different D/A filter).
Option 2: RayDAT (PCIe) and 3-4x ADI-2 FS, then your existing ADI-2 Pro FS you can connect to RayDAT via AES.
Option 3: HDSPe AES (8x AES), then connect ADI-2 Pro FS and ADI-2 FS through AES.
According to manual the ADI-2 FS is AES compatible and with a special (adapter) cable you can use it, see manual.
With Option 2 you can use 10-15m long TOSLINK cables towards ADI-2 FS, Mutec cables are of good quality and not too stiff.
With Option 3: supports longer cables but they might be thicker compareable to MIC XLR cable.
Vinark, what do you thing about these alternatives ?
BR Ramses - UFX+, 12Mic, XTC, ADI-2 Pro FS R BE, RayDAT, X10SRi-F, E5-1650v4, Win10Pro22H2, Cub12Pro