Basel III is actually proving to be quite an ordeal for both the banking community as well as the regulators and some senior members of the regulatory community, both in the UK and the US have made public statements to this fact.
Perhaps one of the biggest issues facing banks with Basel III is how to address Procyclicality, especially if the bank is not running an Advanced IRB credit risk framework. Actually, just obtaining information about the different accepted practices on how to measure Procyclicality within a lending portfolio isn't so easy.
Just the other day I was pointed in the direction of a really good summary and publication on Procyclicality and I wanted to share this link here on the Causal Capital blog.