I'm not going to join the Anti-Vinny bandwagon because I'm willing to give the new dog a shot, but nobody will ever replace Brian and Seth MacFarlane screwed up big time with this. Family Guy will lose even more viewers than it already has and it will eventually go down the same, dull path as The Simpsons did.
If that happens, which it might, it'll be because the audience is just BRTD clones who can't understand story points or subtlety. If anyone though they should have killed Chris, the only truly useless character on the show.