What change do you think would make a positive difference in the united states if the electoral college is abolished?

One change that would make a positive difference would be the direct election of the president through popular vote.  Currently, the Electoral College votes are given through the "winner-takes-all" method, which happens when ALL of a state's Electoral College votes are given to the nominee that won a majority of the popular vote in that state.  An example would be how, in the recent election, all of Arizona's Electoral College votes went to Trump because he gained the majority of the popular votes in that state.  However, because the Electoral College runs on this method, it essentially ignores a large number of votes for other candidates, such as Clinton.  So, if the Electoral College was abolished, the president that would be elected would be the one that got the most votes from the American people.

Hope this helps!