First of it's Stewie, and they abandoned the whole "take over the world thing" around season 2, and it went to a kill lois plot, and even then that was a small part of the story, and toward the end of the run it was a a bunch of things that hinted that Stewie was gay. That was gonna be the plot of the Family Guy straight to DVD movie, but since the show is coming back I'm sure that will be in the new episodes.