The animated film market is definitely going to be an interesting thing to watch in the next couple of years. Every studio seems to want 2-3 films a year as was mentioned earlier.
Obviously WDA and Pixar are in the best shape, mainly WDA. Pixar will probably be able to get Inside Out/Good Dinosaur above or around $250 million assuming the quality is there. Minions should also do well, I'm not going to call it a shoe-in for $200 million, but as far as the "funny side-character spin-offs" go, Minions will probably do way more than Puss in Boots and Penguins. It also helps that Universal is putting it out while Despicable Me is in, and not 10 years later after the franchise's peak is long gone.
The way I see it though, as saturated as the market is right now, the only animated films that have shots at doing $300 million or more will be the Disney musicals (so Moana being the next) and probably the next Despicable Me depending on quality. It'd be wrong to count out Finding Dory and Toy Story 4 but those films have a lot to live up to.