Before I go into any detail over this what if, I have to make clear my own personal views as it is a controversial subject. I personally feel that this would be almost as bad as the holocaust of otl, in that the Nazis would be deliberately wiping a race off of the face of the map. The fact that it would not occur in such a swift or brutal act does not diminish this.
That said, what if the Nazi state followed a process of sterilisation of all Jews, Gypsies and other such groups, whilst keeping them in ghettoes as opposed to the gas chambers and camps of our timeline? How would this affect histories view of the Nazi regime and anti-semitism both inside Germany and across the world?
The reason I ask the question is that I recently watched the HBO film Conspiracy, based on the Wannsee conference, during which it was given as one of the options.