Justice needs a meta-moderation function.
The problem is all of these mechanisms are controlled by the government, which is the source of the corruption. Even voting-- I do believe that the voting machines are corrupted about 50/50- half for democrats and half for republicans. But that only serves to reinforce our one-party-with-two-wings system and exclude greens and libertarians.
I long for the day when all of the nationally televised presidential debates include the Libertarian and Green candidates. (At the 2004 & 2008 elections they put their differences aside and travelled to the debates and tried to get in, and got arrested attempting to do so as a protest of being excluded. And then had a libertarian-green presidential debate. Loved it.)