Eh, sometimes things don't "get a good wrap up". That's life. There's a million movies out there that warranted sequels, but never got them. That's life.
I'm glad King's Quest went out and didn't degenerate into something horrible. There are so many more stories to tell, yes, in other games. The "stories" you speak of could happen anywhere, you just want the King's Quest brand-name on them. That's lame branding love, not any kind of good story or game love.