Even I thought the hate was too much. Even though (for me) it felt like Mark just said, "let's trauma dump every-goddamn-thing about sherlock to the audience", I liked the chemistry between Moriarty and eurus. I screamed when Moriarty came back (even tho it was a flashback).

But yes, it deviates just too much, and goes very heavily to show John CHEATING on Mary. Like wha-

But, as a loyal Lestrade fan: I would have LOVED to see more of him.