Eurocontrol should concentrate more on reorganizing their airspace layout, coordination between the various agencies, interaction with the military,wider implementation of PRNAV/ADS-B/GPS and other pro-active initiatives instead of finding excuses for being inefficient.
Eurocontrol only provide Air Traffic Services over Maastricht Upper Air Space so any changes suggested are going to be pretty limited !
The Eurocontrol Central Flow Management Unit (CFMU) generally do a pretty good job of providing safe flows over the whole of Europe, but the issues you mention are the domain of the individual State authorities, via the various Air Traffic Services providers. Until the airspace becomes a seemless entity, managed by a central agency, you won't see much progress. There's a lot of politics to be talked and concessions made before then, unfortunately.