Common rules and uniform implementation will lead to less bureaucracy and will be a good thing for competitive banks, which will have better opportunities to compete across national borders. This can be expected to lead to increased price and product competition, to the benefit of households and firms in the participating member states.
The Danish Bankers Association has published a report with deliberations on Danish participation in the Banking Union. I agree with large parts of your analysis. For example, I agree when it comes to competition and financial stability aspects. As I have just said, the Banking Union can be expected to create potential for more competition.