The repeal of Glass-Steagall for starters.
What would Glass-Steagall have done to prevent the crisis?
Be as specific as you can.
Financial institutions had already found ways around GS, but with GS in effect the major depository institutions wouldn't have faced such steep declines in capital when the financial markets collapsed. They would have been hurting for certain, but the scope of the problem in standard banks would have been smaller.
of course, the investment banks would have still been fried.
What in Glass-Steagall, specifically, would have stopped capital from declining as much?