I would like to see a Toy Story Prequel
I think a prequel would be very interesting. It's obvious that Andy was not Woody's original owner because as we see Woody has been around since the 1950s. In Toy Story 2 Andy's Mom says Woody is an old family toy which could mean he belonged to Andy's father but it's never stated.
I would like to see a prequel where the origin of Woody is explored and why he seemed to have no memories of his life in the Woody's Round Up days prior to Toy Story 2.