Policies designed to limit the size, remove the complexity, and pre-design an orderly liquidation scheme (living will) are all being considered as solutions in this direction. There is much to be said for this line of policy exploration; especially when it seems that some of the institutions that got into trouble globally have become too complex to be reliably managed.
It is a statistical  2/6  BIS - Central bankers' speeches  fact that the effect of adopting the euro on inflation was just 0.3% points in Slovenia, even though public perceptions might have been very different. For a comparison, the introduction of VAT in 1999 had significantly stronger effect on inflation, up 2.5% points in the first year.