Working on an alternate Great War with a Germany undefeated and a surviving monarchy I had to question the place for anti-Semitism generally and Nazism specifically. To me Nazism is Hitler's unique brainchild, without him the far-right and even a Fascist movement does not possess the same agenda or even ideology. For me the thornier issue is anti-Semitism, something I think will persist in European as well as German culture for some time. I am hopeful that the Jewish war veterans' service does indeed begin the erosion of German intolerance, fear and discrimination of Jews, I think the assimilation continues and within the following generation the issue is mute. The German Reform Party (Deutsche Reformpartei or DRP) would be the best analogue for a genuine right-wing party ideologically married to anti-Semitism, its election results show it is truly a fringe party, and although other right-wing parties took up the issue it is clearly a popular appeal that has less traction than we would assume by the later Nazi success. In this alternate Germany I think Judaism might provoke more distant jokes and insults but I see it being more the same snobbishness from above and ignorance from below, never more than an irritant and likely even extinct as a point of hate. I am not being generous or apologetic, the German Jewish populace appears to be generally less overtly religious and more neutral in being assimilated, these are a German people with a minority religion rather than a minority such as the Poles in Germany, and that argues for the melting of them into German society over time without the circumstances of defeat, Hitler and so forth.
To me it is interesting to consider the paths of historic figures but more difficult as one looks at the villainous, to paint them as something else may be accurate but feel disrespectful, it might be realistic to portray a Hitler who becomes a painter or secret police snitch, who never amounts to more than obscurity, but to me it is difficult to not also appear too forgiving of such persons and what they indeed stand for in our own history. So a dead Hitler might be best, not just for history, but for the alternatives too.