The second point is dubious. A central registry may be better or worse than the best national registry.
The third and fourth are what is usually called the Capital Markets Union in eurobubble speak: https://en.wikipedia.org/wiki/Capital_Markets_Union
The Draghi report had some specific proposals which are rather realistic:
> Reduce capital market fragmentation > > A. Introduce a European Security Exchange Commission > > B. Reduce regulatory fragmentation to deepen the CMU > > C. Encourage retail investors through the offer of second pillar pension schemes where the successful examples of some EU Member States can be replicated. > > D. Assess whether further changes to the capital requirements under Solvency II are warranted by further reducing the capital charges on equity investments held for the long term.
https://commission.europa.eu/document/download/97e481fd-2dc3...
https://commission.europa.eu/document/download/ec1409c1-d4b4... (p. 292)