I’m not sure what this will accomplish. Prosecutors aren’t going to just start dropping charges and judges aren’t just going to dismiss cases.
It will accomplish putting an impediment in Trump’s way — a monkey wrench in the flow of an effective campaign.
Per Dershowitz, they have no illusions of winning in the end. All they are doing is completely illegal, they know it, and they will be overturned in higher courts. It’s just to bugger up the election season.