Call me crazy but I thought some of the members of Organization XIII should have lived. These are the members I think should have lived.
Lexaeus Number V
Zexion Number VI
Axel Number VIII
Larxene Number XII (Yes I know she was annoying and stuff. But she was the only female member of the orginization-that changed though in Kingdom Hearts 385/2 Days with Number XIV Xion (Pronounced Shee-on)-so I think she should have lived)
I can't make a decision about Number XIV Xion because I have hardly played 385/2 Days at all. I will hopefully continue and really play it this summer.