I feel a little cheated by this upcoming The Plan. Is it just me or does it seem like somebody saying "Well we put this 'and they have a plan' in the opening montage for three years and all the internet fanboys are complaining about it so we need to make this movie so they will buy our BluRay discs"?
I love the series and the finale, but this is a bit of a cheat.
There was no Plan, let's move on.
I think "The Plan" is going to be a little like how RDM dealt with "GINO" ala Gina. It will acknowledge the fact this is a bit retroactive while adding a new layer to stuff we think we know. The best fiction is able to delve deeper into itself and find new meanings.