HI Tim, I don't like the idea at all, I'm sry.
I think it must be better altenatives that could be less "painfull".
I'm sorry I'm not much knoledge on the Steem code but maybe frontend platform could perfectly code tools for users to block other users or at least use a tool to wipe the content from the post before it gets stored in the blockchain.
Maybe my lack of knoledge about how things work drive me on the wrong direction.
Anyway I appreciate a lot the info and interest on solving some of the issues affecting our ecosystem. Many thanks for the info.