Pros
Finra is a great place to gain experience about the financial industry. Finra gave me an opportunity to make many contacts in the industry and understand the mistakes being made in the industry. Overall if you are eager to learn and willing to work hard you can benefit from working at Finra, not to mention the great benefits and work life balance. (you can always expect a great holiday party and summer picnic)
Cons
Finra only became a problem for me when I started really pushing for higher salary increases and more responsibility. Eventually for me, the company could not keep up with the pace of my street value. At that point I decided it was time to leave. If you are not overly consumed with making $85k + (generally speaking it could take a few years to get to this salary range, if ever, for some regulatory analysts) and prefer a better work life balance, this is the place for you.