Everything is a policy, even unification. Some policies are purposeful means toward other political ends and other policies have unintended consequences on other ends as well.  I am concerned that unification is a primary outcome sought by a number of institutional elites in Brussels and elsewhere because of the purposeful outcomes they seek (increased power for some institutional elites at the possible expense of decreased welfare for many people) that I think many progressives would find objectionable.  

I think there are many progressives, however, who see the EU project as primarily a means to contest American power in international relations, and an over-presidentialization might be a cost they're willing to accept toward that end.  I hope that sentiment is not large and doesn't carry the day.