With the current resurgence of anti-semitism, one would think that everyone would understand the importance of a project like this: the very ordinariness of Hitler and the circumstances of his rise to power bring home the seriousness with which we should take those who preach they would destroy our liberties and persecute various peoples, from Muslims who aim to destroy Jews and the rest of the West to the leftists who are out to take our guns and establish a socialist tyranny.
The very liberal Jews quoted above who oppose any treatment of Hitler other than complete demonization are often Democrats who seek to demonize all Republicans and create a climate in which no "reasonable" person holds views inconsistent with their own. They must be resisted as much as anti-semitism and seen for the potential tyrants they are.
My concern is that they may depict Hitler as some victimized child who was brutalized by his parents. Then the mass murders by the Nazis will not be Hitler's fault, it will be his parent's fault. That would be disgusting.