As a fan of both the Twilight Saga and Vampire Diaries (as well as the spin off shows), I just think it would be really awesome to cast Nina Dobrev as a grown up Renesmee in a new movie or set of movies for the Twilight Saga. If Stephenie Meyer, or the producers of Twilight would be willing to make another film, I think a lot of people would be stoked to have Nina Dobrev as Renesmee. 

Just an opinion because I love her as an actress and would love to see Jacob and Renesmee's story.