This might sound terribly ironic; is it possible to crowdfund an arbitrator?
That is: Find someone who has a TOS from a favorable perspective (pre 2.0)
Screen them to make sure they're not an idiot or a scammer.
Crowdfund a legal defense in order to go through arbitration.
THEN, everyone walks through the door opened up by the attorney, so that all other cases then use the original plaintiff as their boilerplate complaint.
In other words, the wording of the TOS is specifically designed to discourage class actions, but the principle remains - pooling of resources to file one "precedent" case in arbitration. It's just ironic that you would be using crowdfunding, to help a crowd of people get their money back from some of the worst crowdfunders ever.