She-Hulk and Moon Knight are honestly the only additions that should take place. The Netflix universe doesn't have room for all the supernatural shenanigans, even though it would be cool. It's possible that they could do it all in one Midnight Sons series, but that's not what people who love those characters want. So lets find somewhere else to explore vampires, zombies, hell, werewolves, AND their associated hunters, because there's not enough room on Netflix to do all of that. They couldn't even handle doing IF justice, imho.
I think Moon Knight deserves his own series. I think he'd be *better* used as a foil, much like the Punisher. He actually makes a perfect foil for Jessica Jones, and while he, like Punisher, can handle and deserves his own series, I think he'd be even more interesting, and the Netflix universe made stronger, if he was used like the Punisher.
I think She-Hulk is perfect for Netflix and while she'd be a fascinating foil for Daredevil, I think his dance card is totally full, what with Elektra coming back, Bullseye, Typhoid Mary, Echo, Kingpin coming out, and whatever else he might have going. She Hulk also has a slightly different vibe, and perhaps her comedic bent might be too much, but I think the mature matters she takes on would also be too much for another outlet. Of course, then you have to ask is Netflix ready to take on mature issues, or is it more about just being dark and dealing with the same old revenge plots, DC-style?
Merge LC and IF into a Heroes for Hire, or, if they just have to avoid that, put Cage and Jessica together.