I actually think it would be almost possible to write it as a drabble with a punchline. But it could also be a long-winded well-plotted affair, and then it would of course not be angst-free, but it could work out quite lovely, I think.

(Once QW and I were kicking around the idea of parodying the wangsty Aziraphale Falls subgenre by having Crowley accidentally get redeemed in a comic, possibly pornographic, manner and then wangsting melodramatically about it.)