This is sort of a criticism, mind me, but it seems practical that any firm in the entertainment industry will reconnect back years later (10 for The Incredibles) to shoot for a sequel, spin-off, or prequel. I suppose I understand some of the reasons why, such as fan demand, nostalgia forthcoming, and an open opportunity to develop on the original piece, but I noticed that this is slowly becoming a trend for Pixar. It's true, with success they have seen, why change the formula?
In a future (where we are still alive, and not zombies) could we see the number of sequels, spin-offs, or prequels out number the original movies that were (in hopes) full of original concepts? (That is, if you believe in originality anymore with 7.3 billion people on this planet)
This is something, I personally, would not want to happen.