The History of the Trade Deadline

From the winter of 1922, up until we were born, it was June 15. It wasn't moved to the modern deadline until 1986. So for 63 seasons, it wasJune 15 in both leagues. And I do wonder whether we will see any outcry if say, Shouhei Otani gets traded. That team was able to import the most valuable player in baseball two thirds of the regular season? I could see some people being sort of upset about that.