Before all the hate...
...I think this will determine the opinion of Pixar and sequels. So far we have the Toy Story sequels that everyone (mostly) loves. And Monsters U, which was pretty well accepted, and Cars 2, which most people didn't like. I think if Cars 3 comes back somehow, then Cars 2 can just be the anomaly.
On the other hand, we should have Finding Dory and possibly Incredibles 2 before this, so I think how those do will also impact it all.
Basically, my point is...I hope this one is awesome. I've enjoyed all Pixar films in theaters so far, and I want to keep looking forward to them!!