Liked the different reactions from the boys, getting their food.
Liked the fic potential - first time seeing, touching, hearing - each other, sunlight, moving air. humans, the world.
Liked that the obvious and gross plot in which Mary kills herself did NOT HAPPEN.
Liked Cas' protectiveness in the end, I could identify with his - what I perceived as - loneliness, desperation, and just this notion of "this tiny little piece of the world, I'm gonna do what it takes to protect it, come hell or high water, last stand".
Could have done with less heavy handed writing - and aww, it is so so bad to lose Billie.... I adored her, such missed potential!
Liked the bit of exploration of class/hierarchy
been wanting more of that (in general, and re MoL - ) since Henry.