I am an executive and leadership coach who has written a book on the corporate chief of staff role, entitled, "Chief of Staff: The Strategic Partner Who Will Revolutionize Your Business." The target audience is CEOs and other senior leaders who are trying to decide whether to hire a chief of staff or, if they already have one, think about how they evolve the role over time.
The book cover needs to convey the very tight partnership between a leader and his or her chief of staff. In the photo attached here, I sketched a concept in 5 minutes or less, but you could make this way more professional, vivid, and colorful. And consistent with my business color scheme, which is maroon, grey, white, and black (see my logo at http://tylerparriscoaching.com/) I like this concept because it’s more people focused, and a lot of the chief of staff job is people-oriented/relational, versus abstract or technical. And, the suit and skirt opposite each other imply the tandem of a boss and COS (who might be very different) working together, side-by-side. There's no clue as to which is the boss and which is the COS, so it stays away from gender stereotypes, and there's no skin color for the same reason. However, I also thought that a creative person could use an air traffic control concept, too, and I'm open to other ideas. I'm definitely NOT looking for stock photo clichés. If you need a little info about the chief of staff role to get the concept, here it is:
A chief of staff (in business) is a catch-all role, filled by someone with exceptional organizational and people skills, who handles all manner of tasks not covered by an existing member of an executive’s leadership team or administrative staff, like managing a portfolio of projects for the executive, making sure his or her strategic intent is carried out, serving as an information funnel and filter (like a gatekeeper and "air traffic control" for the volume of requests for the leader's time, etc.