Family Guy never got revived. American Dad never got made. He probably ended up running becoming a part of Mad TV for a while. I reckon it would not be cancelled ITTL because of the absence of the previous shows and it'd probably would be a haven for his sense of humor. These sketches would end up on Mad TV or become its own thing there. He would also probably a do alot of voice over and given how Youtube is becoming a big haven for indie musicians to show their stuff through Project MAY-O, it's possible that he could probably release a musical album.Damn sad to see that still happened, well at the very least I hope Sabat and Schemmel get some kind of karmic punishment.
Unrelated Question: What's Seth MacFarlane been up to ITTL.