I agree, this picture is much better.
If expert involvement offered no crucial points in your project I wouldn’t include it.
In my experience it’s often them who determine the overall layout or design of a vehicle.
Say for a sportscar, great handling will be an enormous competitive advantage and an expert will know all the details about how to place the engine together with all other components. Or when designing an X8 UAV drone, an expert will know exactly how far the props can be from the body as to not interfere with aerodynamics and how to shape the arm profiles, determining for example if we can place ESCs in the arms and that will greatly influence the entire design. Only an expert with years of experience has all these details clearly in mind.