No offense, but there wasn't any real westernization, it's just based off of America. It feels a lot like America from a Japanese tourist's perspective... And saying adding minority trainers weakens the experience is borderline offensive. Really it's no more different than Sinnoh was with it's European influences, or Johto with it's more traditional Japanese flair.
As for the characters being offensive, Aloe wasn't that offensive, I believe her underlings called her "Mama" or something and she had an apron, but that was basically it. Really, in the end she was no more offensive than Yakon. (There were no other significant stereotypes with anyone else, most acted like their Japanese characters would)