I made most of these forever ago. Back when we were discussing if portraits where worth making I made like 40 in a day to make sure we had a backlog (which is why we have unreleased ones) and kept the habit to make portraits out of new event/marquee images as they came up. That way design always has options when they need portraits and minimizes the art requests.
Still annoyed they haven't used the Scavenger Rey one though, its the best one.