Under Introcaso-Davis’ stewardship, GSN has become quite a growth driver, finishing 2015 as the network’s most-watched year ever in both cable primetime and total day among total viewers and key demos. Part of that progress stems from the launch of a new, younger-skewing original series, “Hellevator,” and the continued draw of the Rebecca Romijn-hosted “Skin Wars,” its new spinoff, “Skin Wars: Fresh Paint,” and the return of “Idiotest,” hosted by comedian Ben Gleib. Contestants on some GSN’s shows might benefit from the advice Introcaso-Davis said she would give her 13-year-old self: “Don’t worry. Life just gets better and better. You are actually in the toughest part!”