As one who knows little about Israeli politics, I ask if this is good, bad, or indifferent for the United States?
IMHO, There is little difference in policies with respect to the United States between Netanyahu and Gantz.
Both are staunch US allies, and both are right of center when it comes to economic policies ( although I believe that Netanyahu is more to the right than Gantz, who I think is more of a centrist ).
When it comes with dealing with Palestine, I see little difference between them as well.