I think Walt saw a lot of himself in Mickey, and a lot of Mickey in himself, so for me as long as we have Mickey Mouse, a part of Walt will always live on.
"The life and ventures of Mickey Mouse have been closely bound up with my own personal and professional life. It is understandable that I should have sentimental attachment for the little personage who played so big a part in the course of Disney Productions and has been so happily accepted as an amusing friend wherever films are shown around the world. He still speaks for me and I still speak for him." - Walt Disney
Walter Elias Disney, you are very much remembered, and very much loved - Rest In Peace.