FHIR infostructure for those connecting to External FHIR Repository

As I begin our adventure into using an External FHIR Repository, I wanted to see what opinions people have about a design Idea I was working on. 

I want to create a way that my Team has the ability to send a Message Type, and the system knows from that Message Type which FHIR queries to execute and return the Response back to the user, sort of like a FHIR Query Hub. Does this sound reasonable?

While I know that it can be done directly in Object Script, I was trying to incorporate using a Business Process, and Operation for the Trace elements, since most of my team develops within the Management Portal and not in VS Code.

• What are folk's thoughts around this idea?

• What has others done when connecting to external FHIR Repositories? 

Should I just go down the route of using Object Script and create a Function to do everything above?