Wouldn't a deeper integration compromise that?
As ist is right now for sure....
The civil traditions between....say central and north Europe are so different....there is an awareness that a deeper integration is so not possible....the EU has become to big for that. The doubters of the recent expansions have become right in hindsight.
The Euro crisis has put a spotlight onto it.....the "thrifty" northern Europeans, namely Germans, being forced to pay for the "slacking" South....that won't get any better in the near future as the EU is now more than ever poised to hand out money more freely than before....
These alle are unresolved conflicts....which have to be resolved one day....and in my opinion you can't shackle together what doesn't fit together.....some countries have similiar traditions and understandings and can work very well together and a deeper integration would make them stronger, better....and others not!
But I can only guess here....but that the EU has a problem is a fact. Just one example....to become better capable at acting in many lesser important questions it would be enough to implement a majority decision....but it's not happening, for that you need ALL member states to agree...but one or two will always say "no".
And so that to big, to clumsy ship, quarreling stumbles on.....it doesn't work anymore....something has to happen!