The PCE price index, which is more comprehensive than the CPI, estimates expenditure shares using the national income and product accounts, while the CPI measures expenditure shares using a separate survey of households, the Consumer Expenditure Survey. This leads to some differences in expenditure weights that can at times be important.
Whereas MREL and bail-in requirements may work for larger banks, there may be no clear room for a ‘middle class’ of institutions whose business model may be incompatible with MREL requirements; institutions that may be of no public interest at EU level but still have systemic relevance at local level.