The fines should be proportional to actual damage caused (ie: 100% coverage of any interest on loans, any extra spending the person needed to do in consequence, loss of compound interest, damage to credit rating along with any additional spending this resulted in, and any medical costs that can reasonably be attributed to stress/anxiety). It would be difficult to get an exact figure per person, but a rough estimate of probable actual damage would be sufficient. Add that to the total direct loss - not the money that went through any individual involved, and THEN double that total. This becomes the minimum, not the maximum. You then allow the jury to factor in emotional costs on top of that.
In such cases as this, the statutary upper limit on fines should not apply. SCOTUS has repeatedly ruled that laws and the Constitution can have reasonable exceptions and this would seem to qualify.
If a person has died in the meantime, where the death certificate indicates a cause of death that is medically associated with anxiety or depression, each person invovled should also be charged with manslaughter per such case.