Wells Fargo is the worst repeat offender in American consumer financial services. There should be serious discussions around withdrawing their banking license. It's incredibly difficult to get a banking license in this country, and it does not serve the public good to have this predatory institution operating under the aegis of the American government. Pull their license, let some new entrants into the market.
I agree their charter should effectively be revoked at this point. A de novo bank (i.e. being granted a new charter) is a near impossibility in the US. Something this difficult to obtain should be just as easy to lose. Unfortunately, the FDIC can't just waltz in and shut down the whole damn bank without causing a nation-wide panic attack. Similar to failed banks, something like this would need to be dealt with using…
You could, I suppose, use exactly the same procedure you use for a failed bank, which is force them to auction off their assets and liabilities, rolling their depositors into other, better-behaved banks.