Repackaging animated sitcoms for profit

This Sunday we'll be treated to the premiere of American Dad, a new show from Seth McFarlane, the creator of one of the funniest animated shows of all time--Family Guy. Tragically, a cursory check at the American Dad website suggests that Mr. McFarlane, far from creating a new show, has simply repackaged Family Guy. Doesn't mean it won't be funny, though.

American Dad character = Family Guy analog
father Stan Smith = father Peter Griffin
attractive wife Francine = attractive wife Lois
teenage daughter Hayley = teenage daughter Meg
dorky son Steve = dorky son Chris
talking goldfish with crush on wife = talking dog with crush on wife