If you're a fan of what Marvel has been doing lately then this is great news. None of these characters would fit terribly well with the Avengers and are much better suited to the format of a series. They are all also street level characters (with a bit of an exception for Iron Fist) which won't require the kind of resources to film that the blockbuster movies (or Agents of SHIELD for that matter) do. There's also a lot of material to draw from that would make for good stories and the characters are interrelated to a degree where one show should help support another even if they aren't actually crossing over.
A quick rundown on the characters:
Daredevil: A blind guy with heightened senses who is a martial arts expert. And a lawyer. Previously portrayed in a 2003 movie by Ben Affleck.
Iron Fist: An American who is orphaned in an unnamed mountain range and finds himself in the mystical city of K'un L'un. He is adopted, taught martial arts, and gains some superpowers related to the ability to channel his chi, most notably the ability to make his fist "like unto a thing of iron." Eventually teams up with Luke Cage as the Heroes for Hire.
Luke Cage: An inmate (wrongly convicted) who volunteers to undergo a procedure that makes his skin nearly indestructible and gives him super strength. Eventually marries Jessica Jones.
Jessica Jones: A former superhero who later works as a detective and newspaper correspondent.
I've been saying (largely to myself) for a while that Daredevil and Iron Fist in particular are well-suited to the small screen treatment and could potentially make for some fantastic entertainment. If Marvel can play this right they could have something really special.
