Fox is looking at animation for a few simple reasons:
- Longevity. King of the Hill, The Simpsons, Family Guy, and American Dad have one main thing in common: Their characters don't age (with the exception of KOTH's Joseph and Apu's octuplets). Bart, Lisa, Maggie, Bobby Hill, Steve, Meg, Chris & Stewie will always be kids and never go through puberty, giving them a longer shelf life.
- Animation in the long run is cheaper to produce. You don't need to have fancy new sets built, one actor can play several roles, and you don't have to worry about the cost of costuming, makeup, etc.
- As was pointed out in the Simpsons, if you have trouble with an actor, you can replace them with little difficulty and no one would notice.