Look out for 'bait and switch' on job titles, promotion opportunities, etc. Not good keeping agreements, even if in writing.
Leadership looks out for themselves - direct reports are for generating ideas for leaders to take credit (not as a team). Managers block promotions and internal moves for employees they need to do their work and get themselves rewarded.
Individuals working in consumer groups have little to no consumer experience and rely heavily on the very few people with the experience. If you have solid experience and get work done, you will be relied upon others will be expected to do little or no work.
Significant amount of unprofessional behavior, especially by long-term employees is acceptable and often encouraged by management and overlooked by human resources.