Financial Regulation of anti competitive practices in the banking industry In the EU?

What can the EU do to increase regulation of anti competitive behaviour?
How can the EU do this without limiting the entry of new firms?
How this help the safety of the customers?
Will it overall provide a positive effect on the economy if banks are more regulated than they currently are?
does the EU actually need more regulation? can you measure it?
What will this regulation mean for the customers and the firms?
Need to be precise- such as examples (I.e Enron) or other types of regulation ( market is self-regulating) ( individual member state regulation – Hungarian government become more self-regulating in past 10 years)
Flaws in the current market regulation and how that can be built upon
take an economic view