The key point is that a major bank in difficulty is more likely to pose a threat to financial stability than a small bank, and if that is the case, distinctions are called for in some, but not all, rules. And after ten years, we should check whether the new rules are also having the intended effect.
In the United States there are plans to relax the rules for banks. I don’t believe in returning now to deregulation or to purely national rules. That would be a big mistake. We need globally consistent rules for the activities of large banks, of banks which are important for the financial system. The crisis should have taught us that.