Their is something, I think, deserve more attention.
Technically speaking, ALLS angels and demons are, at least, bisexual, if not pan.
Let's just think about it one minute : we have never see their true forms. And, besides their names, we have no idea about their gender. So we can suppose that they don't really have genders.
Plus, when they came to earth, they just take the first body who came, no matter men or woman. (For example, in season 14, Michel as a male vehicle, and a female one, and the angels keep calling him Michel).
I truly think the show should have insisted more on this point. Crawley with a male demon, or things like that. Because they just took vehicle, so it doesn't matter what they look like, the most important it's who they are !
I also think the show should have propose more different bodies (especially woman's). They were all way too perfect, and beautiful (I love them though). I just think that with all the "demons don't ask permission" they could have more fun with the sexualities, and bodies.
Currently writing a story about Dean and Cas. They are on a case, and the suspect is a wedding planner. She think they are soulmate, so they have to act like they are fiancee
So imagine : Cass being super lovey dovey because he saw this things on television. Dean being embarrassed AF all the time.
Jack and Sam coming to the city, and seeing the guys, trying suits, while the girl can't stop seeing how cute they are together.
Sam can't stop laughing about it, even helping to plan the wedding, and even call their mum. And Jack being super happy, because he think it's real