Based on the TV show not the book.
Basically, how would things play out if Heussman didn't exist to engage his plot? Hitler would probably be alive for at least a year or two longer, which would be about the length of the remainder of the series, which begs the question of how MitHC Hitler would react to events such as the Japanese withdrawal from the Pacific States (if that happens).
Now it is important to remember that the hitler of MitHC isn't very war-hungry against Japan, most likely due to the high castle films telling him all possible scenario. While still a genocidal lunatic, he's probably not gonna do anything too radical compared to OTL Hitler.
Basically, how would things play out if Heussman didn't exist to engage his plot? Hitler would probably be alive for at least a year or two longer, which would be about the length of the remainder of the series, which begs the question of how MitHC Hitler would react to events such as the Japanese withdrawal from the Pacific States (if that happens).
Now it is important to remember that the hitler of MitHC isn't very war-hungry against Japan, most likely due to the high castle films telling him all possible scenario. While still a genocidal lunatic, he's probably not gonna do anything too radical compared to OTL Hitler.