IMO, GSN at this point would be best served to sticking closer to what they are known for, game shows. If they could (or possibly have) tie into the upcoming Game Show Marathon, which I think will do well for CBS depending on when/where they plan to air it, buy a couple of ads that say, "Hey, you just watched that classic show, why don't you watch it with us tomorrow?" Couldn't hurt 'em.
Tyshaun