I'm thinking aligning this with SGA canon--Jeannie may be a happily married mother of one but she still has to go out at night and kill vampires, while Rodney tries to keep his past of Slayer sidekick and pandimensional Key away from his current Atlantis life. However, if you want to go full AU with the other SGA characters given Buffy-style roles, I certainly won't complain.
SGA/Buffy
I'm thinking aligning this with SGA canon--Jeannie may be a happily married mother of one but she still has to go out at night and kill vampires, while Rodney tries to keep his past of Slayer sidekick and pandimensional Key away from his current Atlantis life. However, if you want to go full AU with the other SGA characters given Buffy-style roles, I certainly won't complain.