"Oh, Davros. I am far more than just another Time lord," said 7th Doctor, Sylvester McCoy in the 1988 serial, Remembrance of the Daleks. That line was one of the first hints that there was a deeper story behind the travel-weary Gallifreyan. Back then, the suggestion had been that the Doctor was also known as "The Other," one of the three Gallifreyans responisble for all of Time Lord civilization. It's possible that we could be seeing a return to this plot line at long last.