Yeah...I like end of the world as we know it type movies. Greenland was more of a personal struggle for survival than a larger look at what might happen.
Would love to see a Lucifer's Hammer miniseries, based on an earlier science fiction book by Larry Niven & Jerry Pournelle, which took a more wide-angle view at a comet hitting earth.
Too much coincidence and "what perfect timing" in this movie, even though I watched it without a break, and with no thought of not finishing it.
The subject matter simply deserves more than a movie-length treatment.