Harvard Business Review shared insightful comments on the virtues and dangers of group creativity/brainstorming. What is commonly thought as a benefit to workplace progress, can actually limit the unique thoughts produced by regularly creative individuals.
My personal work experience mimics the sentiments expressed in this article in many ways, particularly when it comes to my graphic design projects. The more conceptual feedback I receive initially on a given project can drastically limit my creative process and the end result is rarely something I am proud of.
On that same token, there are times that I would never have thought of a product had there not been any group creativity. Some direction or inspiration is always needed.