Actually, there weren't any teen characters in pilot. The pilot featured the classic characters: Barnabas, Vicki, Liz, Roger, Carolyn, David, Joe, Julia, Willie, Angelique and Sheriff Patterson - and Maggie, Sam, and Sarah were to be introduced in later eps. Prof. Stokes was referred to and probably would have also been introduced in the flesh at some point.
And, yes, DC was still alive - but the main producer behind the show would have been David Wells, who did The West Wing.