I've had thoughts that fan edits could exist for this series, in which all storylines that are separate enough could be split apart from the others and turned into their own films.
For example, Jon Snow and Daenerys have stories that rarely, if ever, connect to the stories happening in Westeros. Considering that a LOT of screentime is cut out when editing this way, it's possible to create a 2-3 hour film that only covers their stories of the season.
This could apply to other characters as well, such as Tyrion, the Hound, Arya, etc. Ned Stark's story could make a good film I believe, if done right, though that one may have to be two films, or one long one, since his story covered almost the whole first season.
The way I imagine it, it would be not too different from the current Marvel Cinematic Universe, in which they all exist within the same continuity, but do not qualify as sequels to each other, if that makes sense.
That's just what I've been thinking over lately. I'm not sure I'd be willing to tackle that HUGE series of edits though, unless it were just for my own personal viewing.