In part because they recognized the benefits of continuity and familiarity during a period of upheaval, central banks generally retained their established approaches to monetary policy during the crisis; and, in many respects, the existing frameworks proved effective.
Transparency is really something that should be improved. Because only when customers really understand financial products; or when the public understands compensation decisions, or bank managers and supervisors really know which risks an institution is subject to, will trust in the sector be restored.