Pros
Presently (2008), the NGC Integrated Systems (IS) sector has a number of unique programs that are at/near the leading edge of aircraft design. The work can be challenging, and there are opportunities for rapid career growth (especially for junior engineers).
Cons
Work on aircraft programs in the IS sector is cyclic: the best work is during the design phase for new programs. When this is over, engineering takes a back seat to manufacturing, and the job becomes more mundane. Unfortunately, this is the typical situation since (a) new designs programs begin/end in a few years; (b) new programs are not frequent; and (c) many engineers will not get to work the new programs since some support is required to manufacturing for existing aircraft.