Maybe as a unnanounced new figure. Or they showing that they do listen to the fans and showing that they are willing to look for possiblities to create Goofy.
I am still holding out hope for a play set that includes Goofy and Pete. It would work with Minnie, Mickey and Donald. Pete would be the villain and it would be a new story.
If battlegrounds can work with 2.0 characters, this would be feasible as well.