Some more of Yorick when he was alive! I really liked the idea of him being a friendly old dude who just kept to himself in his family's manor while Horatio headed out to wherever.
Also!
I really liked the idea of the "Hollow Horseman" being a warped spirit of Yorick as he sacrifices himself to ensure we escape The Hollow. Throwing out the last piece of himself to ensure that somewhere, he will live on after death.