If by accident we win, will there be money to pay all the claims?
No and no
We won't win by accident. Depends on what the judge decides.
Winning won't be an accident.
Whether there is enough money depends first and foremost on whether the deep-pocketed individual defendants are also found liable. If they are, there should be plenty of money -- many of them are quite wealthy. If not, then Prosper will almost certainly go BK if there is a big judgment in the class action. Then how much money is available to pay the judgment depends on whether we can reach all the P3 loans. If so, then we will all be unsecured creditors of Prosper, on equal footing, and we would all (the class and the P3 lenders) share proportionately in all of Prosper's assets (including the P3 loans). We won't get 100%, but we should get quite a bit.