I would have been so psyched if they had managed to get Tom Hanks to appear in that one little scene where Colin Hanks gets kicked out. It seems like the kind of thing Tom Hanks would do. He was probably too busy with Bridge of Spies or something.

Someone pointed out to me something really depressing about Sid in Toy Story. If you look at it from the perspective of the real world, toys don't feel, and Sid was being genuinely creative with his toys. Sid couldn't know the toys were living, and he is punished for not knowing.