Additional Idea Filters: Submitter, Submitter's Domain

I want to easily filter a board's ideas by Submitter and Submitter's Domain. When going into an executive review with a given customer, I often need to tell them how many of their submissions we've acted upon. I will commonly export all ideas. I'll filter the list of ideas in Excel based on a specific set of users associated with the customer. There's no easy way to filter the list of ideas in FeedBear based on submitter or submitter's domain. This makes it hard to find all ideas from a given customer to take action on.