[Lawtan]

Story:

I'll admit, my favorite season remains season 1. It was much more "cloak-and-dagger" then. However, somewhat realistically, as Sherlock became more popular, he's become more direct, letting other factors act stealthily. They sort of alluded to the difference with the third season - he works with the cops more. I like the climax of the third season as the situation somewhat forced Sherlock back to the earlier point...and, as could be predicted, he miscalculated as a result.

Characters:

Okay, I've said this to Galla before, but as far as I can tell, Sherlock is less of a high-functioning sociopath, and more of an extremely high-functioning autistic - to which, people do often debate the difference - Sociopath's not wanting a perceived "flaw" and Autistics not wanting to be seen as "cold and unfeeling." As far as the psychopaths, I feel they are to a good degree accurate.
Then there is third season Mrs. Watson...who if they are trying to make her to be psychotic...I don't see it. She seems more like a caring person who was employed in nasty work and should be suffering from PTSD (the lack thereof being the only indication of something off). To a sociopath or a psychopath, as far as I know, partners are like valued pawns or toys that return affection. I don't see such a person crying like she did. However, making her an assassin was an excellent way to tie together things.
Moriarty is...a bit over-the-top to me. A person who could run such a large operation I'd expect to be more like the villain from season 3.

Section 3:

On another note, it is fascinating to see large elements of the tales of Sherlock and Watson brought to modern times. I can see much...and may begin practicing turning the tree in my head (think in pictures, and my most common starting point is a tree like the Yggdrasil) into something like a "mind palace" to assist my memory.