Playing reckless games with people's livelyhoods which nearly brought down the world economy?
So send the few who had control over that to jail and don't implement a bunch of red tape that negatively affects every business out there.
Hmm, that sounds like the opposite of what I would do considering that 'red tape' on Wall Street doesn't really negatively affect very many businesses and whatever few i-banking jobs are lost (they'd be lost in the cycles anyway) would simply be replaced with an incredible number of regulatory jobs at the banks so they do what they are intended to do. The economy is more stable and thus businesses are positively affected.
No sense in sending people to jail and destroying more lives in response to this. Are we seriously going to turn into Italy, jailing scientists and the lot next? You have to have a guilty mind, and there is no sense in trying to prove that while convicting innocent ones.