They got rid of Rose during Tennant, and introduced the Weeping Angels. On the other hand, they introduced Jesus Tinkerbell Doctor. During Smith, they brought the Weeping Angels back, just changing everything that made them any good in the first place, and then the universe exploded repeatedly and Rory's 2k years old and plastic except he's not and there was a grand conspiracy between everyone and everyone else to get rid of the Doctor but none of them thought of shooting him and...well, on the other hand, there was that Neil Gaiman story.
Hard to say, really, there's lots of fail to go round, and only the odd decent bit to make up for it.