Kudos to Elementary - you did well, IMHO. It will be interesting to see what direction the remaining episodes go in, and what the next plotline set-up will be.
Elaina March was a pretty formidable foe. We don't see a lot of villains recur unless their name is Moriarty, but I wouldn't mind March making a reappearance. It was nice seeing two intelligent women spar. Welcome back, Sherlock. We've missed you.
[Kitty and Watson's] slow, tentative bonding over the next few episodes is one of the most intriguing elements of Elementary's unusual and potentially risky new direction.
Elementary has clearly defined its new circumstances, showing the audience Joan has moved on from Sherlock and is operating on her own with Gregson, Bell, and the NYPD.
While other Holmes/Watson incarnations focus Watson being a friend, medic, and put-upon backup, Elementary has elevated the character into someone with loftier aspirations.
As a televised entity, Elementary appears to be firing on all cylinders with a reimagining of Sir Arthur Conan Doyle's work that's probably in a truer spirit than any that have come before (or since).