I think of it as a Sam-centric team fic because the story starts with Sam and ends with her and she is the one with the ongoing crisis that needs to be resolved during the course of the story - in this case, her feelings about the destruction of Tollana. Although I hope that everyone has something useful to do towards resolving things, she is the one with the story arc in the fic. I'm really glad it seems well balanced to you though. :)