Play!Draco is fanon!Snape.
Not exactly, obviously -- he's not a spy in a time of warfare, he may not have a day job at all from what we can tell, and the woman he's mourning was his actual wife and the mother of his child, not the girl he had a crush on in high school. And also, of course, he has a teenage son with whom he actually has a good relationship.
(Hands up everyone who guessed that, out of Harry and Draco, Draco would be the better father? *hand stays down*)
BUT he's coping with his feelings by being snide and sarcastic and kind of obnoxiously posh, just like fanon!Snape back in the days when we* believed in Snapely Snape Manor and all that jazz. And while I've mostly moved on from that Type now, I still have a weakness for it, when it's a character I already know.
* Look, as soon as