Great writer, lousy Mycroft....
I love the fact that Mark has resurrected Sherlock on TV and that he has done a great job in writing the series (for the most part). I don't like that he has made Sherlock out to be such an anti-social and rude person, and the fact that he has removed the warm relationship between Sherlock and John, but otherwise the writing is fantastic.
That being said, he should never have written himself into the series as Mycroft. He is not a suitable Mycroft. Mycroft is an extremely powerful, imposing man, and Mark is simply not this type. Mark is best as a warm, gentle character, frustrating bureaucrats or as weasely, simpering types, but he does not have a strong, formidable presence that commands respect, which is who Mycroft is supposed to be.
I'm truly grateful to Mark for this new Sherlock series. He shows real brilliance in his interpretation of the canon. I can't wait to see season three.
"...nothing is left of me, each time I see her..." - Catullus