The specific action is the standard action in fraud cases. That is caring about the rule of law. You excuse going soft on somebody who committed record breaking levels of fraud because treating him the same as the standard is hard.
If the properties can’t get the amount they are claimed to be worth, then they are not worth that much. That is why Trump is having problems getting the bond, because he lied about the value of his properties.
Ther is a massive downside, which is rewarding fraud, both by only having a punishment equal to the fraud and also going easy the bigger the fraud is. That just incentivises more fraud, just like giving rideshares a free pass for bypassing laws that apply to cabs and short term rentals for avoiding lawd that apply to hotels encourages those industries.