There should be no national solutions protecting specific market actors. Regarding the clearing layer, the question that has to be tackled is what kind of infrastructure will provide a viable solution for pan-European instant payments throughout the Single Euro Payments Area.
In investment area, we always preach on the virtue of diversification. Portfolio diversification means when you bet for upside in some products, you should also place protection elsewhere for downside. Investor diversity and heterogeneity is predicated on the notion that market needs both optimists and pessimists. Thus the system should not encourage all investors and their portfolios to behave in the same way.