lljkk not a purist at all. I loved series 1 and how they brought Holmes to the modern era.
But like winterkills and Jaffacakes point out, there is a difference between taking liberties and totally changing the central core of the main characters.
I don't care what new characters they introduce or that BC looks nothing like the illustrations of Holmes. What has irked me is that it all started so well, they stayed faithful to the character of Holmes even if they didn't religiously follow the stories, but now they seem to have done what they did with Doctor Who and made it more about relationship dynamics and less about crime solving.
I don't care who Mary Morstan used to be or what Watson's pressure point is, I want to watch Holmes use his deductive powers to solve crimes and mysteries just as I want to watch the Doctor outwit the Daleks and save humanity - not get all emotional with his assistants and start talking about his bleeding childhood.
We don't want our favourite character psycho-analysed. We love them they way they are, without question. They don't need to have "relationships" that just humanised them and made them like any other character on TV. We want something different and both Doctor Who and Sherlock promised something that lifted us out of dreary crime dramas and into escapism.
Only now I feel they've reneged on that promise. For me anyway.