No one needs to represent the community. Injured parties are availed the legal process to remedy tortuous harm, which the exchanges have caused their customers by stealing their money so Sun could take over Steem governance. If enough of them pop up, an enterprising att'y could try to fold them into a class action.

Sun's bots acting as witnesses are currently failing to update the price feeds, which several witnesses have alleged will cause harm to the blockchain. That would, if true, injure all stakeholders. Again, torts are remedied by legal action, and if enough of us pursue remedy at law class action can ensue.

Financial harm is litigated alla time. It's why lawyers rule the world.

Sad, but true.