I know many of you were extremely fed by angst!Crowley. But I was not. Here's what I would have wanted to see (with the hopes of a fully functional, healthy relationship outcome for Aziraphale and Crowley coming out of S2):
Aziraphale leaves, as he feels he must, although deeply hurt by Crowley's betrayal.
Crowley stays, as he feels he must, although deeply hurt by Aziraphale's betrayal.
Crowley moves into the bookshop. Becomes the new caretaker of Whitbecker St. He's not an angel, still full of mischief, but he does take care of his own. We see him slinking down the street, headed to the bookstore, still cool as a cucumber, but everyone we know is greeting him as he walks through like he owns the place. Maggie and Nina are clearly together, maybe even with a tot. Crowley is uncle/godfather and smitten. The bookshop looks a little different - more plants, some familiar statuary from his apartment now in pride of place. Still not selling many books, but it's obvious that in the absence of Aziraphale, Crowley has created a home for himself and, even has a small community of friends/friendly humans around. He's kept things going and built happiness.
This could plug into the plot we got. When Aziraphale comes back they have to work out their mutual sense of betrayal and see if they can find a new trusting foundation even though each feels the other left them.
Even better would be if Aziraphale couldn't stay away for more than a few weeks, and now actually visits on the regular - friendship and late night cocoa with the blinds drawn where he vents about heaven and Crowley supports him. When the second coming goes awry they already have a trusting foundation to hop back in and work together. The Jesus plot stays relevant and ties up/reflects S1's antichrist plot except this time it's Jesus who saves the world in the face of God, and Aziraphale and Crowley are mostly peripheral to that, although rushing around like mad anyway.
They stay at the bookshop for a while, but as those humans get old and pass, they decide it's time for a change. End on South Downs cottage.

















