Pros
Lots of work, and in some cases good work. The pay is comparable to other firms of the same size in the same area. The benefits package is very comprehensive.
Cons
The high turnover puts the firm at risk for limitations claims. Clients are often upset that their files are turned over to new lawyers regularly. There are significant office politics and little in-office communication. Very few new lawyers stay long enough to become partner. Their cost overhead to be 'international' must be obscene, and the place operates no more efficiently than a government, Management asks for truthful feedback but incentivizes the complete opposite. Strangely, despite the firm's size there is little in the way of in-house development programs, and most junior lawyers are left to either sink or swim.