There's this from Bleeding Cool regarding future projects in the Hat Building:
... I did take a second to enquire about what [Disney veteran Burny] Mattinson will be working on next. And while it’s early days for his new project, it does sound like the perfect follow-up to Pooh.
I am working on just an idea of my own which is basically a Mickey, Donald, Goofy feature film idea. We have to present it first to the bosses to get the green light. ...
As it happened, I talked to Mr. Mattinson a bit of a while ago (the audio for which will appear here next Monday and Tuesday) and we chit-chatted about projects that he's developed and worked on over the years that never made it to production. One of those projects -- in the 1980s -- was Mickey, Donald and Goofy in a version of The Three Musketeers. As Burny said when we spoke:
"That earlier version was a lot different than the direct-to-video version that came out a long time later. Ours was going to be more action-oriented, like the book."
It's a shame that Burny's version never got made. But then, I've long thought it sad that the Mouse, the Duck and the Goof haven't made it into anything longer than a featurette. They deserve a format that's longer. They deserve to have their own full-length franchise.
Who knows? Maybe Mr. Mattinson will make that happen. He's got Mickey-Donald-Goofy storyboards in his office that look spiffy.