I think there's a much simpler way to do fix it - force users to anonymously unendorse in such a way as to maintain a fixed ratio of endorsements to unendorseme

I think there's a much simpler way to do fix it - force users to anonymously unendorse in such a way as to maintain a fixed ratio of endorsements to unendorsements. Don't show unendorsements or a negative endorsement level. Suddenly incentives are much better aligned.