You don’t need to go full hierarchy but adding a level of middle management will acknowledge the dynamics that are already present and make your organization more efficient. You can hold onto your principles and organizational culture while still providing a framework that adequately specifies delegated decision making throughout the organization.
What are your strengths? What do you need to work on? What is the next pitch (opportunity) for your business? Will you be ready to knock it out of the park or will you foul it off? Do you know the answers to these questions or are you swinging blindly at whatever the pitcher throws? Competitive strategy is too important to leave to gut feeling, guess work, or good luck.