Do you mean create a team behind the app? What element of design do you mean? There are things with the Overcast design that I like and dislike, but they fall into multiple categories.

Marco seems like a very independent individual who wants to minimize dependencies on other people. He has mentioned in the past that he does get outside help on things, but this doesn't extend to other people taking ownership. At that point, he is managing people which doesn't seem something he wants to do.