Yeah, stuff like that is why I say an adaptation in spirit is more important that a word for word adaptation, understanding what makes that story, and/or characters special is the way to go.
Something like Krakoa would be a hard sell yeah, and I doubt it'd be adapted like the way it is now, it most likely would be more like Genosha, or Utopia or whatever, basically, allowing mutant villains to still be villains.So in that regard i highly doubt anything from Morrison or the last 20 years will be picked up as main status quo, including Krakoa. The best case scenario is that something like House of M or Dawn of X becomes a 2 part storyline, after which the show goes back to going new ways or further adapting classic stories in new format.
Just like Star Trek, Star Wars and Doctor Who, X-men is the product of a certain time and certain creators thumb prints, which has infused itself into the minds of a larger audience and can't be removed anymore. But for the same reason i feel it's short sighted to call their demise, just because the newest output isn't great.
At worst they go into hibernation, until a new dedicated group of creators bring them back and all the old charm and past visions will draw in people all over again.
This is of course, just one perspective on the whole subject and not even all points i'd like to consider.
I don't necessarily think stories we have in the comics now will never be adapted, but they are far less likely to happen, since adaptations are always about making money, usual X-Men are a safe bet, Krakoa is not.
But unlikely doesn't mean impossible, so hey, maybe someday, like, 50 years from now when some director is nostalgic of the Krakoa era lol.
Heh, guess grass is greener on the other side, 'cause Spidey's getting another high school adaptation, one that is MCU canon even (for now at least), and the response to it is, mixed, well, at least in this website, dunno how more casual fans are reacting.