They need to bring Stabler back for one thing and no. It would completely ruin everything. This isn't Castle or Bones. They are partners and best friends. Not like Booth and Bones having a baby or Castle telling Beckett he loves her. Olivia and Elliot's relationship is kind of like a brother and sister relationship. They fight over stupid things but make up in the end. That and Dick Wolf took the names from his son and daughter.