The problem with "The Crazy Ones" (other than the fact that it sucks and you can tell Robin Williams and Sarah Michelle Geller don't want to be there) is that it doesn't have very wide appeal*. Look at something like "The Big Bang Theory": I'm not a fan, but I understand if someone is and it can appeal to different kinds of audiences. Compare that to something like "The Crazy Ones", which is clearly meant to appeal mostly to baby boomers, who are a shrinking audience.
Oh, and "Elementary" is switching nights next season, which is for the best.
*I could hazard a guess that this is also why a show like "Two and a Half Men", which still has legs, has taken a dip in the ratings. Like TCO, it's not going to appeal to a wider audience-at this point, people have either finally realized the show sucks and it only appeals to the Chad Numbers of the world. I wouldn't be surprised if it ends next season or the season after next.
And holy shit, Unforgettable is still on the air?!?! I thought that show had been cancelled twice!
It was cancelled once, but then they brought it back as a mid season/summer show.