As with any company undergoing growth of this nature, this may not be the company for you if you need a tasklist created for you every day. You need to be flexible and accommodating for how the business works. You will be expected to bend and flex with the company, and at times it can feel frustrating -- like you don't have a sense of direction -- but that sense of direction can be easily defined through a simple conversation with your manager. I don't consider it a con; perhaps better stated as a warning that this is not the place to work if you're looking for a rigid, static, and fully inclusive definition of your job.