https://steemit.com/steemit/@l0k1/steemhordes-a-proposal-for-a-sidechain-for-groups-and-moderation

I beat you by 4 days and my concept is more practical, and lays out a route to develop it. And the devs want to talk to me about what I have been proposing. Ok, pardon my gloating. Really, it is unseemly.

In fact I have been saying since my whale-smackdown, that user-customisable filtering is the critical ingredient that will solve the biggest problems on Steem at the moment.