Thanks for the comments.
Good quearion to clarify. Here is Discuss, otherwise I would be posting at PR to ideas repository in GitHub.
Now why this idea is good…
I know Kleros awesome work, but this is slightly different because we have visibility fee. I don’t think we can use Kleros to moderate public chat without visibility fee, and having this visibility fee makes porting to Kleros more complex then what we can do within our own democracy. Kleros could be used as additional last appeal method after root delegates appeal, and this would be good because it could save us from an internal failures in our message curation system.
The way I designed it should fit under our current work in Topic Democracy and Voting Dapp, as it uses subtopics to have specialized delegates and lower quorums.
I am totally open to other options of moderation and as emergency measure allow users at least to ignore users they choose (easily breakable by a silly script, btw).
Visibility fee is important because I can create as many accounts I want, and use one different to send my spam each time, from a botnet.