I should have been able to fit all 3 in one post, I think it used to allow more space. Third thing: Laurel got a proper funeral, like she wanted. Salted and Burned, ashes spread in Big Sur. The only people in attendance: the Winchester Clan, Thea, Joanna, Ted, Nyssa and Sara. If Laurel's parents didn't care about her enough to respect her wishes for a burial, they don't deserve to attend her real funeral. If Laurel isn't coming back, it's important that she get that at least.
what's interesting is that i am 100% confident that somewhere within the htlgi universe, there is an earth that exists in the multiverse where laurel did not get to come home.
her resurrection was the consequence of a chain of events that she had little to nothing to do with. it went back to edie, to john winchester, to the car accident in 1995, all the way back to the 1500s when hazel and alice aelard lived and the curse first began. take just one of those things out (maybe john actually killed edie, maybe lady shiva did not save her, maybe there was no car accident and she lived out her life as the normal, perhaps even good person she could have been, maybe there was never any eldest daughter curse) and there's still a good chance darhk would have killed laurel, but then she would have just been...gone.
i think life for dean and mary in the aftermath of that would be...quieter. maybe, without an evil witch stalking their family, even softer. but less. life after laurel would be darker. star city and that cozy house in the quiet neighborhood would no longer be home.
i think they probably would have ended up back in kansas. maybe not permanently, but for a little while. all of dean's roads seem to lead to kansas in one way or another. he would have remained retired, no getting called up for world saving duty, no more fighting, regardless of how routine the case seems (because you never know, after all, when a random vampire might shove you onto a rusty spike) because he's all mary has now and he has to stay alive for her. he would have chosen her the way john should have chosen his boys.
the lawsuit filed against oliver would have likely been settled very quickly because i don't think he would have put up much of a fight. the tacky statue would have been removed, possibly replaced by a tasteful plaque somewhere in the city, maybe at the courthouse, maybe near where cnri used to be. joanna would have overseen that.
i also don't think oliver would have replaced her. i know that's literally what happened in canon but i'm trying to make htlgi!oliver less of a shit. like, yeah, he's still gonna be a douche 40% of the time but the fool’s trying. more than that, he loves her. he loves her very much. he's allowed to love her here. he wouldn't have even tried to replace her. he knows it can never be done. on this earth, he will have to find a way to love and let go, to live with all those ghosts without a weird statue and without trying to erase her from his life.
iris probably still ended up eventually releasing blackbird (with dean's blessing) on laurel's birthday one year. it was very well received. especially by the citizens of star city who still, even after years, love their girl.
laurel clearly deserves a better funeral. she deserves what she asked for. she deserves to have her final wishes honored. she deserves big sur. but big sur means letting go. ashes means there is no way back. i'm not sure dean would ever be able to bring himself to accept that fully. sure, there are periods of acceptance, he learns to live with the grief, there is joy and laughter, maybe even other loves, but there's still that thought in the back of his mind.
what if, someday, she comes back? what if, someday, there's a way? she'll need something to go back to. she'll need her body, her arms and legs, a beating heart, the tattoo on her hand of the three blackbirds. you can't come back if you're salted and burned. that's the whole point. and what if she comes back?
he knows better, of course. he knows how these things work. he knows she belongs in big sur, with the wind and the sea, soaring, but every year, as april 6th approaches, when he thinks about following through on his promise, about giving her away, he can't help but think -
what if, one day, when mary's all grown up, when he's old and gray, there's a knock on that door and it's her, alive and well, in that blue dress they buried her in, smiling, as young and beautiful as she was that last day, telling him, ''i'm sorry i'm late. i got so lost.''
that's the thing. that's the problem. big sur means letting go and when dean winchester loves you, he doesn't let go.