Specific rule changes have occurred in the mSpecific rule changes have occurred in the modern era of sports, like reducing the size of goalie pads in the NHL or limiting the type of contact allowed in the NFL. This category of rule changes were attempts by leagues to Question 1 options: increase the difficulty of the game for players. give advantages to teams with less skilled players. increase fan interest in the games. manipulate game outcomes in favour of large market teams.odern era of sports, like reducing the size of goalie pads in the NHL or limiting the type of contact allowed in the NFL. This category of rule changes were attempts by leagues to