Okay, so this is not an American version of the Doyle classics. But it satisfies my first requirement of a good show--I like the characters. Holmes is a man struggling with his inept social skills while simultaneously reveling in them. Watson is a woman whose job has become a hobby and more. As they adapt, this could lead to more interesting interactions. The police characters are skeptical and protective of their turf, yet open to help. They grudgingly admire Holmes' results.
Holmes is also a man who has no love of conventions. It is interesting to watch him navigate his way through a society that tries to force everyone to comply with its standards. In this process, Watson acts as liaison and interpreter. As she gains more information about Holmes, she becomes more useful to him and, perhaps, more of an annoyance to him. He wants to remain an enigma so that he can keep his secrets and demons to himself. She tells him it is good to talk of one's feelings, but he will do so only if forced. One can only hope that the writers eventually create a background for Watson that is equally engaging, though she is somewhat damaged from her experience with a malpractice case. This is only the first season, so there is time for more layers to be added.
Regarding Holmes' crime solving techniques, they are best when he interacts with suspects or witnesses. He has an eye for the truths they reveal when they are trying to hide them. Can he see his own truths as well? Wlll he find the time to deal with his own issues when the world offers so many interesting diversions for his curiosity?