Adding a dissenting ID is the disagree process. Trying to link it to autogenerating a list to choose from just reopens the same computer vision issues constantly brought up on the site. I don’t think there should just be a ‘you are wrong’ process, you should have to express what you think it is if you disagree.
Simply disagreeing with no alternative proposed breaks the algorithm to generate community ID unless you simply say once disagreed that vote is disregarded. If that is the case I also fear it being a tool for vandalism.
The principle on the site is each person gets one vote towards the identification of a record, not each person gets one vote and the ability to delete or invalidate other votes they don’t like or disagree with.