We have the opportunity to work on important issues one at a time and really sink our teeth into them. You really get to run your own campaign in your state from recruiting volunteers/interns to work with you to building relationships with local organizations and VIPs.
Cons
There are a lot of problems in the world and it can be hard to work on just one at a time. There are also a lot of factors outside of our control - elected officials schedule votes, funders decide which states they want to fund - so we have to be ready to roll with the punches.