I believe this could be a good idea because say you don’t believe in all of the president’s beliefs/decisions. A president may elect biased Supreme Court Members based on their own beliefs. However, if the citizens get to vote, they will have power in what happens in Federal Cases because they get to choose the members of the Supreme Court. However, many cases don’t typically go to the Supreme Court, so it is unlikely that you will see see the inside of the court.
In my opinion this is a good idea to do since they are less likely to be bought by the president. Our supreme court should always represent the values of our country and block actions of the Executive branch if deemed illegal.