Kramer and George move in together and become roommate buddies that date chicks and stuff. Kramer would be the cool guy that gets all the women, and George could be the dumb sidekick.
or
Elaine gets married to a guy who already has kids. It would be a warm family sitcom about the struggles of the non-traditional family in todays society. It would have important episodes such as teen drinking, and drugs. The promo would say, "The very special episode you must watch with your children."
or
George and Kramer would be cop partners. George plays by the book and Kramer doesn't. They struggle to get along while trying to fight crime. Sometimes George's by the book methods work and sometimes Kramer's street smarts work. They will learn from each other and become the NYPDs best cop duo.
or better yet, maybe I'll just watch the sindicated episodes of Seinfeld.