One thing to mention here is the scope management - actually it is unmanagable scope as it is become bigger and bigger when more and more people involving into it. It's really like we running a project at middle of way, and then we found out in order to achieve the setting goal - save Lincoln's life, have to scrafice lots of other people's life, which just happens without control as the other party with the supreme power - US president. Michael, Lincoln and Sara have to continue fighting back. Very risky project, unmanagable scope and high risk.
I just finished the episoda 19, season 2, I'm more worried about Michael and Lincoln's destiny. With Carolyn step down of the presidency, who can save their lives? As I mentioned, the project scope creepaged.