I'd like to modify Kanban cards to show the portrait of a verifier on the card, in the same way the portrait of the Assignee is shown on the card. The Verifier field is defined as User Picker (single user) in the issue type.
When I modify the Kanban card appearance to show the field, it shows the verifier's name, rather than their portrait. It's ugly and it makes my cards take up too much room.
Is there a way to get the card to show a portrait rather than the name?