On a slightly tangential note, the move to euro-bond penalises the sensible and rewards the profligate (Germany’s main and quite understandable argument). But if they (the Germans) want any chance of resolution they must realise they are going to have to bear the brunt of the re-distribution of risk. However, packaging the poor performers with the stellar performers is unlikely to incentivise foreign investment sufficiently to induce increased lending. My thought is to perhaps go in the other direction: rather than from small granularity to larger; disintegrate further.
Sub-sovereign does have certain advantages. As do larger corporate bonds. It’s easier to assess an attractive R:R in Bavaria than it is in Germany as a whole. Easier to identify a worthwhile investment for London than the UK in total. Due diligence on Ford is a lot easier than on the entire Motor Sector.
I know it doesn’t fit the EU (Franco-German axis) agenda at all, but diversification of risk would probably yield (no pun) an improved aggregate inward foreign investment flow than going in the proposed direction.