I like the thought that Picard is actually a Q and Q in the movie is trying to show Picard that he is a Q, without actually telling him but showing him what is possible.
I hope they make a Star TreQ where Picard has been initiate into the Q Continuum, and maybe some flashback episodes showing how Picard's Q powers were at work and he didn't even know it.
In that analogy I am Picard (and you are if you like Picard) and Q is showing us the same way Q is showing Picard.
My favorite idea is that John DE Lancie is Q in Star Trek and the Q who posts. Like he IS actually Q and Star Trek is a true record of the future.
Sorry for shit post (but not too sorry).