In teams, that has to be one of the overriding challenges maintaining that conceptual integrity.
Yes. And so, when I was teaching a software engineering lab, I would tell the teams (typically consisting of four people), “Choose one person to be the boss and another one to be the technical director.” And I use the analogy of the producer and director of the film. One person is responsible for getting it done and another one is responsible for getting it right. And those are different functions, and the producer had better not interfere with the artistic concept of the director—that is, the designer.
via sdtimes.com