Because Karen still has a lot of potential ahead of her as the female lead of the show, and multiple seasons of her filling Ben Urich's shoes ought to pay off (maybe even with some more crossovers into other shows?).
Agreed. I’d argue that, on a meta level, Karen still has value for the series. Not only is her backstory still a complete mystery, but her relationship with Frank was well-received on The Punisher, she’s a proxy for the public-at-large towards whatever Daredevil does/will do, and yes, I still believe that her and Matt have issues to sort out, conversations to be had and beds to muss. :D
I’m not going to say which characters are expendable, but I personally believe there are one or two in the series that I think have gotten alot of focus and are nearing the end of their arc. Karen isn’t one of those characters to me. Neither is Foggy.











