Pros
The benefits package is amazing, even if you're just a temp. Fun atmosphere, always a lot of perks, even if the job itself is boring. Coworkers tend to be friendly peers rather than smarmy corporate types, although there's a lot of corporate lingo around.
Cons
Long hours, plus I had to work occasional weekends and holidays - didn't have much of a personal life outside of work. Also gained 15 pounds. Great place to get ahead in business, but not if you've got different kinds of career goals.
Advice to Senior Management
A little more transparency in decisionmaking, but this is the case in all companies.