Err, Pixar? Did you forget the whole 'no sequels' thing you had going at one point? Because it seems like you're making a lot more sequels than you used to, and I don't see the need for a fourth Toy Story film.
But what do you think? Do you want to see Toy Story 4? Or was the series fine when it ended with the third film?
Why? It ended fine the way it was. Andy grew up that's it. No more Toy Story. Unless it takes place between 1+2 or whatever, it doesn't need this. Stop milking things for money.
I think that it ended pretty well with the third film. But as long as the plot is good and the cast hasn't changed much, then there are no objections here.
I was really disappointed to hear about them making a fourth film... I thought the conclusion of the third film was perfect, and just don't see what other worthwhile contribution to the story they could be adding by tacking more on after that.