Oes the European Union Suffer from Enlargement Fatigue?

This is my proposal for my dissertation so far. It still lacks a clear theory, which is needed to explain WHY the EU would want to expand further and a clear methodology. Those two are what I am stuck on so far.
Need to answer the important question: is  enlargement fatigue a real phenomenon, or is it simply a useful name for something that has other (domestic) underlying causes.
Not too much emphasis on previous enlargement but only mention why is enlargement fatigue a problem now, rather than at any previous time (for instance 1986 enlargement round). So i would like to include it, but not past enlargements take over the dissertation.
A more clearly articulated thesis and reflection of that thesis throughout the rest of the proposal would have made for a stronger proposal. Word counts for chapters would have been useful.

Dissertation Proposal:

This dissertation will argue that  enlargement fatigue spreading throughout the European Union is an exaggerated concept that has been made a scapegoat for the domestic policy failures  economic, social and institutional  exacerbated by public disillusionment in the Union structure and policies. The EU has always been more successful at carrying out the enlargement policy than it has at communicating enlargement, especially to the European citizens. Subsequently, enlargement cannot proceed bureaucratically, or even diplomatically; it has to be done democratically with the citizens taking part in the policy process, and the confidence of the public opinion in Europe has to be taken into account if future enlargement is to proceed. These negative sentiments and apparent hurdles for future enlargement are not so much a sign that Europe should not expand but proof that it cannot not function smoothly without altering institutions and operations to reflect that it is no longer a cosy bloc of 15 predominantly Western Europe countries, but an overwhelmingly diverse group of nations post-2004. While no previous enlargement round has proceeded without scepticism and alarm, the issue again arises as to what extent enlargement fears are warranted or indeed exaggerated.
The issue of European unity has been a critical component of European identity since the catastrophic outcome of World War II left the continent torn apart and in a state of disaster. To counter the catastrophic outcome of the war, with the impetus for a new form of cooperation driven by the determination to rebuild Europe and to eliminate the possibility of another World War, the idea of forming a would-be European federation or government was proposed by Winston Churchill the notion of a United States of Europe(at the time thought without the UK) in 1946. Following on this idea, the French foreign minister Robert Schuman presented a proposal On May 9, 1950 for the creation of an integrated Europe indispensable to the maintenance of peaceful relations. This proposal  the Schuman Declarationis considered to be the beginning of the creation of what is now the European Union. While the initial reasoning behind the founding six countries desire to unite was to control the steel and coal production of France and Germany, which were fundamental to war industries thus stabilizing the region of Europe, cooperation quickly came to encompass the integration of both economics and politics of the member states  a type of security without military means. As Europe gained stability and grew economically, enlarging the Community was inevitably the next step forward, and starting in 1973 with the first enlargement, it has evolved to 27 members in 2007 through five subsequent rounds of enlargement.
Unifying Europe once again has been a great feat for the EU. With expansion from 15 members to 25 in 2004 s  big bang enlargement, amongst them eight ex-Communist states, the Union still aims to provide stabilization to the region and within its borders, arguably by tying member states and potential candidates into the Community structures and regulations, thus ensuring less chance for destabilization in the region. Until very recently, officials in Brussels liked to describe enlargement as a significant element in EU security and foreign-policy objectives. In recent years however, particularly following the 2004 and 2007 rounds, the enlargement policy has become one of the most divisive issues in the EU, with  enlargement fatigue forcing its way to the top of the agenda and creating much cause for concern for the future of the Union. Enlargement thus dominates a significant aspect of the present day challenges facing the EU as the project turns 50 in March 2007, illustrating that it is indeed facing a mid-life crises and in dire need of counselling.
Following on this theme of the current enlargement malaise plaguing the Union, and for purposes of my dissertation, I propose to examine the recent dilemma of  enlargement fatigue that has de-railed further ambitions of enlarging the European Union. I will seek to identify the true nature of  enlargement fatigue as defined by EU the EU population, the leaders and the policy-makers and to consequently establish whether it is a temporary phenomenon or will and how it is going to affect the region s long-term future. My thesis will be that there are indeed feelings of  enlargement fatigue in the EU at all levels, however it cannot be attributed to enlargement as a policy but instead to problems of internal governance and EU citizens despair regarding domestic policy issues and lack of legitimacy of the institutional structures, which in turn has translated into waning support for further enlargement. I define  enlargement fatigue on two levels; the first is negative public sentiment for further expansion, which stems from their perceived democratic deficit in the EU notions of unaccountability, lack of legitimacy and transparency of the Union and its institutions  resulting in fear of further disillusionment. The second explanation is tied to the EU leaders and policy-makers; the adoption of twelve new members since 2004 has proved to be a taxing exercise, leaving behind feelings that the EU may have moved too far and to fast and that the absorption capacity of the Union should be agreed upon. Given the current political and economic status, and the institutional and administrative frameworks, the EU has undoubtedly reached a time when inward reflection, not outward expansion, is needed. My dissertation will have a threefold aim: First, I will seek to achieve a clear understanding of how and why negative backlash has risen in opposition to further enlargement of the Union both on the public and bureaucratic levels; second, to what real factors can the disillusionment regarding the enlargement policy be attributed to, focusing on the domestic policy issues such as the need for institutional reform and increased citizen participation in Union politics; and finally, how the current sentiments and dilemmas will affect the future enlargement policy as a whole, particularly in relation to ongoing Turkish and future Ukranian membership, and whether a Union of 29 is in the near future. In examining public sentiment for further expansion, I will address the failed Constitutional Referendum and what it has meant in terms of EU citizens getting their message of dissatisfaction of Union politics across to the leaders and what lessons the leaders have taken out of this  no vote to address the concerns of the citizens and re-think the goals of the Union.
The purpose of my study in the area of enlargement will be to examine the credibility of the concerns that arise when hypothesizing future expansion of the European Union into a European country such as the Ukraine and a Muslim the only Muslim country with ongoing negotiation talks, Turkey. I would like to study the relationship between rising anxiety regarding enlargement  on part of the citizens and leaders and whether or not Turkey has, and Ukraine might not have, any causal connections to such anxiety levels, in