Fox has various prime-time cartoons in their hopper. Here is yet another:
... [Ryan] Reynolds and [Sandra] Bullock are expected to lead the voice cast of And Then There Was Gordon, an animated comedy from Reynolds and Allan Loeb’s recently launched TV company DarkFire, which has received a presentation order from Fox ...
The question isn't why Fox is doing another night-time animated half-hour. The puzzlement becomes, why are Rupert and his minions the only ones pursuing television animation during the evening hours in a serious way? Because they're the only ones who know how to do it successfully? Because they're the only ones with a WGAw contract to write same? (Both ideas far-fetched to me, but stranger things have happened in Televisionland.)
One thing I know. If Fox Broadcasting makes enough money from all its home-screen animation, the other carnivores -- Disney, Universal-NBC, CBS-Viacom -- will be elbowing their way into the market.