Engoron, Merchan, Fani Willis, and a dozen other anti-Trump fanatics who were willing to break 'age old law' in order "get Trump" at any costs, should all be disbarred. Whether anything will happen when all the dust clears after the election, remains to be seen.
But even if they are all disbarred, they still accomplished their primary mission. The overall mission was election interference. And they did that regardless of what happens afterwards. They will all still get paid for their work, even if they failed the side-quest of putting Trump in jail.