I’m intrigued by the idea of Daywalkers. Basically the good version of a vampire. They get all the perks and none of the drawbacks. Live forever, no problems with sunlight, or holy relics, however they don’t kill to eat, they either survive on animal blood, catch and release, or could even feed on vampires  (it’s totally your choice on what they eat as long as they don’t kill people).

In the world I’m invisioning daywalkers get turned just like vampires but becoming a daywalkers is a random occurrence. It only happens once in every 1000 vampire turnings and you don’t know what you are gonna get till the new creature rises. 

I don’t have a lot of thoughts about the story line just the way the world works. All I ask is 

-Angel gets his soul before dru turns spike

-spike is a daywalker

-Whistler doesn’t show buffy angel but Angel decides he’s gonna try and help her for his sins after seeing her in LA

-because they are rare no one tells buffy about daywalkers before spike shows up

-if for any reason buffy gets turned as a slayer she must become a day walker not a vampire

-must turn into Spuffy. (Duh lol) bonus points for Spuffy sex. 

The plot is 100% up to you other than that. Mostly because that’s as far as my mind has me thinking with these characters.