When the time comes, they'll just ignore the Constitution or at least relieve it of its meaning.
The path to a healthy government has to include rule of law. I think the slippery slope we are on is very dangerous. When people decide ignoring the Constitution is easier and just as legitimate as amending it, it is the beginning of the end. I think we already passed that point and I'm not sure how we can recover.
But the more difficult it is to take away the rights of the minority (particularly the right to vote), the better.