One thing mentioned in another thread earlier, that a lot of people seem to be missing, is that there won't be any "big payday" from civil actions against Pedo State. PSU is a state (i.e. gov't) institution. While the gov't is generally fine with private citizens suing each other for absurd amounts of money, they limit the civil liabilities in cases against the gov. I don't know what Penn's limit is, but it would not be surprising if it was in the $150-$250k range.
Civil cases against the individuals involved may be a different story. It then depends on how deep their pockets are (my guess is that Joe Pa is probably the only one with really significant personal net worth), and if they can claim they were acting in an "official capacity" at the time decisions were made. If they get the "official capacity" treatment, then all potential liability is shifted to the institution, which probably has very low statutory liability limits.
Where the real financial burden will be felt by PSU is not in any civil liability penalties, or even in lawyer fees, but it's going to be the cumulative effects of thousands of sponsors and donors reducing or completely eliminating their support. That's going to really, really hurt.