While some might see an animatronic of Walt Disney as a way to honor the legacy of the man, it could also just be seen as bad taste. Perhaps trying to bring Walt “back” in this way would be seen as using Walt’s legacy in the wrong way. Most animatronic characters in the parks are of fictional people. Those that are based on real people, mostly inside the Hall of Presidents, include individuals who, for the most part, were either long dead or were alive at the time and able to give approval. Those that have given their voice to an animatronic, as one expects an animatronic based on Walt Disney almost certainly would, recorded themselves specifically for that purpose, which wouldn’t be the case for Walt.