The reason why people think reforms are necessary is because humans won't do the right thing without a system forcing them to. Aka, congressmen won't refuse Big Money, so we should make term limits. Hey, how about the people refuse to vote for someone who is on Big Money's payroll and how about Congressmen take charge and refuse to deal with Big Money? Then we won't have to reform anything at all!
Reforms aren't the end-all-be-all of human political behaviour, and I don't know exactly when or why Americans started thinking somehow they were the solution to our problems. A law, program, or policy isn't even 10% of what makes society work. It is the willingness to comply with, carry out, and respect the law that makes 90% of society. Hence, Prohibition - biggest most expensive reform of its time - failed because Americans at every level didn't respect it, refused to comply with it, and acted against it in anyway they could, however small; they invented a huge industry resisting it, an unmanageable economic force the government could never hope to regulate or control as long as it was in the shadows. War on Drugs failed for similar reasons.
The answer isn't that we need to change how the Supreme Court works.
We need our Supreme Court Justices to be better so that there is no need to even talk about replacing them.
You don't need to ban alcohol. You barely need to ban anything. You need to know how to handle yourself -- become disciplined and strong willed enough -- so that addiction doesn't destroy yourself or others. That's a far more effective tether than all the rules, laws, and punishments in the world.