Chris Ashton is definitely one of the foremost domestic duck experts in the world. I can't think of anyone more knowledgeable. I have read that article before too. I think she was just saying that it would be a long project to get a distinctly shaped Mini Runner, which it would be. Developing anything new generally takes awhile though. It is just easier to develop something with a body type similar to an already existing breed like Calls or Mallards. Developing a new breed or color variety easily can take 4-6 generations (or much longer).
Josh Snyder is working on Mini Runners. He had some developed that were lost to predators and is now working on them again. I don't know if he knows about BYC, but I will ask him.