If they're doing an animated series, why not put it on the Cartoon Network? It seems like a good bet they're be interested, at a price that makes sense on an animation budget. The likelihood of Cartoon Network's interest is the reason to do an animated series vs. live action. Otherwise, why do it at all?
CBS can also put it on hulu or whatever ancillary revenue streams they can think of, but those options won't fund even an animated series. The make or break is, where is it going to be placed on broadcast or cable? Any show needs that as its main revenue stream, or it's a non-starter.