When responsibilities are clear, the decision-making process is much faster. Unambiguous roles and responsibilities make it possible to establish concrete goals, so team members know how their performance will be evaluated. As a manager, you're responsible for everyone who reports to you. If they do great work, it reflects well on you. If they screw up, you're ultimately to blame.
Regular meetings are the only way to track progress and stay on top of the action in the trenches.
Scheduled check-ins provide predictable structure while also giving your staff regular opportunities for offer up comments, questions, and constructive criticism. Every employee should receive a regularly scheduled performance review. It can also help spark creativity. When people know what's expected of them, they tend to have a little extra brain space for innovative thinking. And that can pay off handsomely for everyone involved.