Speaking up is a key leadership skill, whether or not you’re officially the team leader. Everyone involved in a team effort should actively look for ways to improve, make recommendations, and generally be responsible to the team for the success of the project—to speak up.
Speaking up when we see a better course of action can be intimidating, but you can learn to do it effectively. Using a model or checklist, you can make a good case in as little as five sentences. It may not end the discussion, but at least it will start it.