PROD-I-1099 Ability to exclude custom fields in the CCL

Hi Team, Renaissance Learning is hoping to be able to exclude custom fields for a multi select dropdown in the Content Library. Some of their Q&A pairs have multiple products assigned to them (product lines are the custom field) so they can search for Product A, but that still pulls in results with Product A and Product B. They want to be able to run a search for Product A but not Product B. Would it be possible to build a way to exclude a custom fields in the same way we can exclude collections or