Pros
I suppose it always depends on the team you work on, no matter what company you work for, and I happened to work on a great team. The director was passionate about what she did and the other HR administrators always extended a warm hand whenever I needed help. Even though I was only an intern, I felt like I was apart of the team. I felt empowered and that I mattered. They do a great job at orientation and training and they set up these milestones (six months, one year, etc) and see how you are progressing in your role and in your personal career goals.
Cons
I feel like they streamline positions for a reason, the reason that if they do happen to lose that person in that role it wouldn't take too much of an effort to find someone else to fill the same role.