After some thought into it.. Unless Steem blockchain itself starts using zk-snarks or fully private transactions, there's not really a way to hide the value of ones account. Just like how how someone can't hide his bitcoin worth as soon as he made his public key known.
However we can try to make it difficult or at least deter any of such events on the website interface level. the data on the blockchain is untouched or has a "reveal worth" value set so that someone can have the option to whether reveal or hide his worth.
Of course, that will come with it's own unforeseen shitstorm package..
choices choices