Board Thread:Questions and Answers/@comment-24979796-20141003111126/@comment-24386552-20141005145219

An interesting theory of mine: Cristina's original original ending would have been if the actress was disinterested in doing the show past S3, Burke would have left with her in tow after being denied the job at the hospital. Meredith would be all alone and it would be a completely different story. They would have had a happy ending while Meredith would be all alone, and then she would be able to fully focus all her attention on her new sister. Which would probably still be introduced that following season. Luckily that didn't happen.