Something The Doctor said in the Christmas special further supports my opinion that "Sherlock" is just another Doctor adventure where The Doctor has taken on the guise of a human.
When he returns and asks "are you the same people as before?" because he already "deleted" them from his memory.. Something that Holms also made reference to in the first season of Sherlock. I'm just saying! - Joe "The Anvil" Pierce
or Moffat is recycling and assumes no one is that smart. - Big Joe Silenced
he can't underestimate the Doctor Who/Sherlock fans? - Joe "The Anvil" Pierce