Seeing Stefan become a modern day grim reaper is what I'm most excited for in season 3, but I do wonder how his sacrifice will affect Delena. Damon obviously loves her very much, and I think Elena is going to come to terms with what she feels for Damon (especially now that Stefan's not around!) but will either of them act on it?
Elena claimed it will always be Stefan, would she be comfortable with Damon while Stefan is being forced to become a killer? And as for Damon, he's started out as a guy who would be happy to steal Elena away, but then he realized his brother deserved her (and made her forget his own love) and now that Stefan has sacrificed everything for Damon, will Damon feel guilt if he acts on his feelings for Elena?
So excited for season 3!