First, I am forming this post on the hypothesis that the Nazi regime is still in power with the same methodology. I do not necessarily believe that would have been the case.
Well, I would never have been born because my people would be exterminated. Also, history would have been rewritten and those still alive would not be able to speak out agains the Reich. I am afraid that, since part of my family was slaughtered in the Holocaust as well as some 80% of my people, I am a little biased against Nazi Germany. I shall think about your question further and, if I can think of any good things, I shall answer again.
I believe that, had Hitler won, the genocide would not have stopped with the peopes he was already targeting. I bolded the text that follows the background of my statement so, if you do not feel like reading the background, you can find the text where I go into my theory easily. Ok, the background that goes into my belief:
1) The Holocaust made a lot of money for the Reich.
2) Focusing on various groups galvanized the populace against the internal foe.
While Hitler definitely despised Jews, it was much more than that. Hitler and his Doo Whop crowd wanted to focus the nation on an internal foe, already disliked, giving the ethnic Germans someone to freely hate. It was something the ethnic Germans could see. The nation was in a state of low morale along with financial issues, from WWI. The way the Jews were processed from the ghettos to the Camps, provided Germany with a lot of money.
Some of the reasons we were in the Final Solution are the same as for the Jews, some not. Like the Jews, this was focusing the German people on another internal foe. Germany did not get much money from us other than from our slave labor and selling such things as hair due to us being poor, but including us helped earn Hitler in that it would appear he was tough on crime (no, we were not all criminals). Brown and black people obviously do not fit his ideal and, to my knowledge, we were the only brown peoples with a significant presence in Germany.
Another thing that was done to all people in the Camps was to use them as slave labor, the moneys going to Nazi coffers. Art was produced in the Camps that was sold. Teeth were pulled for their gold. Hair that was cut off of the victims was sold. What clothes they had on their backs when they got off of the trains was sold.
I could run down the list of people targeted, from those in the Final Solution to those not in it but targeted, from homosexuals to the mentally and physically impaired, to Christians, to… to…
3) The Holocaust was a highly effective tool to keep the populace in its place via fear.
The category of “asocials” to be sent to the Camps was to stamp out opposition and to keep the ethnic Germans who opposed the Nazi party under tight control. All it took to get someone shot by the Gestapo or sent to the camps was someone reporting them for subversive behaviour. This included a child angry at a parent.
Ok, now the basis of my next statement has been laid:
Once the targeted peoples had been extinguished, it would not have stopped there. 1) I believe the Reich would make use of some other group to fill their coffers. 2) There would still be ethnic Germans who opposed the Nazi regime, thus requiring the atmosphere of terror to be maintained.
Hilter would have shifted his demonization and slaughter to other peoples. He needed it to keep people under control. When he succeeded in slaughtering another group of people, he would need another. I suspect that his next targeted group would be various dark skinned peoples but I really do not know.