I’ve had people say this was on the market, but maybe not Openspot? I have a 4Pro, and would like to also use it with a completely analog radio, either sending or receiving. Is there any workflow to make this happen?
No, it isn't possible with the existing openSPOT hardware, if this is what you want you need to look up Allstar node.
If someone pushes analog into Allstar on their end, can I link to it with an Openspot4Pro on DSTAR?