Hey, no one can possibly accuse me of being a friend of Wall Street. But none of those things is illegal, or even should be.

Perhaps some could be regulated. A lot of things are regulated, like the number of insect parts allowed per pound of flour, or the amount of butterfat that has to be present in whole milk, but they are not necessarily illegal per se. They are simply industrial standards which must be followed for labeling purposes.

You can do things like define an interest rate as usury, or tell banks they must keep a certain percentage of their assets in cash reserve. But you can't just go in and dictate what they can or can't do just because you've been burned. OTOH, you COULD force them to publish these numbers publicly, so at least we could be warned about it.