I would like Trello cards to, by default, show the creator's username.
The Custom Fields power-up allows for a user-editable text field which is displayed on the card front. Trello's Butler allows for automated filling-in of Custom Fields. However, it's unclear if there's a Butler action to fetch the username, which is the break in the chain.
Does Trello provide a way to identify who created a card? shows how to grab the username from an API query, but that doesn't help from inside the interface.