This is the announcement I was most interested in of the new ones. This appears about as spot on for casting as you can get for Luke Cage. He's got the acting and physically imposing looks for the part.Mike Colter is Luke Cage as well.
Cumberbatch was no surprise. I'm fine with.
Ritter was my least choice of the short list that was published a few weeks back but I'm not so attached to Jessica Jones as a character that I can cry foul either with her getting the role.