Pros

Great opportunities to make a difference both for internal as well as external projects.
Great opportunities to 'dogfood' the latest and greatest products.
Outstanding benefits.

Cons

Many managers should never have become managers; their ability to help you drive your career was limited at best.
Communications between groups could be better; sometimes projects were duplicated or even more!

Advice to Senior Management

Review and manage your lower level managers better; in other words if you have someone in the lower brackets after reviews, look closer to see if it is manager-based rather than actual performance based.