what would have been a satisfactory ending:
they scrapped all of [redacted]'s original script and started over
it was light and humorous all the way through
az was not treated as dumb or naïve for taking that place in heaven
az and crowley made up in the beginning of the film and were a team trying to stop the end times for the rest of the finale
the message would have been "we need to fix what is broken, not burn it to the ground"
Az and Crowley would show some form of affection towards each other, like a hug or maybe a kiss
Az and Crowley decided they didn't need god anymore, nor follow her rules
the metatron would have been dealt with properly
what would have been a PERFECT ending:
Az gave Crowley hope by explaining that they just need to fix what's broken, not start over, and Crowley admitted Az had a good reason for going to heaven in the first place
Az and Crowley say "I love you"
Az and Crowley being pretty much "useless", while jesus and the humans are doing the important bits by "being fundamentally people"
the plot was solved when heaven and hell teamed up against humanity (including Az and Crowley who's now explicitly on "their own side: humanity's side.") and Team Earth convinced Team Celestial how stupid this whole charade had always been
god had NOT been controlling everything this whole time and had always been more like a narrator of the universe, rather than one affecting the story
everyone had always had free will