Anghraine

As far as I remember, Draco and Harry mostly have a proximity friendship - because they're in the same House, and get along reasonably well, and there's nobody else to do things with - I think it happens quite a bit at that age. Of course the story's main friendship is between Neville and Harry.

Poor Lily! If Frank and Alice were already dead, Bella and her gang would of course have gone after another Order member - a fairly depressing take on alive!Lily, though. :(

Snape, I think, probably took it hardest of anyone but James himself.

Personally, I think James - even in his more idiotic fifteen-year-old moments - was always the most well-balanced of that lot, so IMO he's the one most likely to have moved on and grown up by thirty-something; e.g., if Snape had died in the war, I don't see him picking on his child. So here, I imagined him disappointed but too good a father to say so, while Sirius and Snape have temper tantrums.