Support setting sfdcId when creating or updating a Program via REST API

Today, there is no automatic way to set a Salesforce campaign that should be linked with a Program using only the REST API. However, when querying program information, both the linked sfdcId and its associated name are displayed. Would it be possible to update createProgramRequest/updateProgramRequest  so an SFDC Campaign ID value can be passed? Ideally, there'd be an option a la the UI to auto-create an SFDC campaign in addition to setting a predefined value, but even having the ability to link pre-existing campaigns would be tremendously helpful.