Here are some thoughts on why some more time and effort would be well spent. Instead of messing with specific accounts, a well thought out monetary rebase point combined with a replay, a measure that obviously would take some time to get right, could completely purge all ninja-mined stake from the airdrop.

I believe a rebase plus replay would be the only measure that could truly stop Hive from inheriting the ninja-mined shitcoin reputation that STEEM has with much of the crypto investor community.