I suggested negative rewards for those abusing flags here: https://steemit.com/steemit/@djleo/proposal-drastically-improve-steemit-quality-control-with-incentives#@coinhoarder/re-djleo-proposal-drastically-improve-steemit-quality-control-with-incentives-20160711t033922015z
Perhaps it will make people more apprehensive about abusing flags?