Since this genre tends to consist of character driven stories, I suggest we make a criteria for people who want to create a character...a sort of character creation sheet for our world's characters. For instance, if someone wants to make a mom, they would need a name, age, physical description, personality description, likes, dislikes, back story, family data, description of their son(s), daughter(s), sister(s), etcetera, etcetera.
It would also be helpful if they suggest a couple or more pornstars they would want to "play" the character in any image captions or gifs someone may create. For example, if I'm creating a pretty blonde bimbo mom, I might suggest a gif maker use Taylor Wane or Victoria Lobov as the character's avatar.
They could also create a short introduction to the character. Perhaps not a full story, but just short descriptive hook to wet a reader or author's appetite for the character and give a feel their space.
Bullies, son's friends, perverts and motherfuckers can be created in a similar way, submitting a profile of the character, and giving their likes and kinks, back story etcetera.
People can also contribute settings such as towns or neighborhoods (that may have a twist to them), or suggest plots or storylines. But, over all, I think we should encourage people to fully exercise their creativity and generate content rather than just pitch ideas and expect others to put in the work.
This will give creators a pool of characters and story elements to draw and borrow from to create stories or captions and collaboratively we can make a multiverse of characters, places, adventures and misadventures that will grow with time. It will be up to the readers to decide what is "canon" in their version of the multiverse.
But I think it should start with establishing a character creation process. We should lay out what should be on the "character sheet". Thoughts?