Brody asks Carrie, "What universe are you redeemed in for taking the life of one man by taking another?" In Homeland, it seems. The men Brody killed deserved, Carrie emphasized to him. The vice president has always been painted as a bad guy by the show, and Carrie tells us a little bit about Akbari's atrocities. In the end, Brody - who was torn between Nazir and his country - committed sins for both. He killed Nazir's vice president and killed Akbari for the United States. A man in conflict without knowing real loyalty dies from having served both sides. His loyalty belonged to your love, Carrie.
Now Brody's final act was far more comprehensive than the simple murder he had committed before. Here, Saul's plan to infiltrate Iran was already underway - Brody just needed to help put the final piece in place (for Javadi to replace Akbari). The result (echoing real-life situations), where Iran will open its nuclear facilities for inspection, in exchange for lifting economic sanctions. Everything is going according to plan and, as Carrie told him later, "you won".
It was a victorious ending not only for Saul and his life's work bearing fruit, and also for Carrie, who (as Javadi said) could know that everyone - including Javadi - now sees Brody as she saw him. Which means that Brody himself was redeemed, and that he finally paid his debt for his previous betrayals.
Moving on, the show positioned itself in the best possible way. Brody is gone (also in the best possible way), which means that Carrie is free to be the star - even though she has lost the one love of her life and father of her baby. The series can go anywhere from here, and the news that Jess, Chirs and Dana's characters will be downgraded from series regulars to special guests is encouraging. Unfortunately, Brody is gone. Let's continue.
On the other hand, Brody was also the reason for the show. Their struggle, their loyalty, their conflicts really drove the drama. Homeland could become just another pure spy show now, which, honestly, has been his strong point this year. It may not be the program we signed up for, now with the full Brody arc, it could turn into something else that is still very good.
