All the bots do not use a condenser.
So, most of what @frystikken wanted would be mute.
Else, the post is just one of thousands, the chances of being stumbled upon are minuscule.
The default (sorta) right now is that only your followers and the bots see your posts.
But, this doesn't end the problem. That of people outside of the group seeing and messing with the post. Thus, you would have to do something that breaks STEEM to implement this. And any such breaking ends up with a tool to censor.