I think Kizzy's post was the most thought provoking in this entire thread. Reunion *is* already happening at the level of families (at least, here in the U.S.) because of intermarriage of Catholics and Orthodox. And, in order to maintain family unity and love, people are agreeing to disagree and to love and respect each other despite their formal religious differences. And that is practical ecumenism and living the Gospel: to love one's neighbor, especially in one's own home. It is not perfect reunion; but it is laying the groundwork for reunion, which is love.
As for the "big" issues . . . they are real, but they just don't seem to be that important in the lives of ordinary people.
For example, a lot of American Catholics, really *don't* believe in papal supremacy and infallibility. Instead, they regard the pope as the leader of the Catholics and as a kind of first among equals of all bishops. That change happened, in my opinion, when the papacy issued its condemnation of artificial birth control. Most Catholics rejected (and continue to reject) the birth control teaching as ludicrous. That plus other factors have led many Catholics to downgrade their view of the pope from a previous view as a supreme, infallible leader. Instead, most Catholics (at least, here in America) regard the pope as the leader of their religion who is nevertheless quite fallible; and, they see the pope as potentially a symbol of unity among all Christians. Most Catholics, however, don't say so in public because the "official" teaching is otherwise. But, when you talk with ordinary American Catholics --perhaps those who don't go to internet chat rooms-- what I described is the general view. And so, at least on the issue of the papacy, there is a real opportunity for Catholics and Orthodox to draw closer because a lot of lay Catholics are already close to the Orthodox view of things.
The bishops and theologians can have their meetings; that is important. But the real movement for reunion (at least, in the U.S.) is happening among the laity. And, it could happen much more, if handled properly.
I think the real issue, regarding reunion, for most Catholics in America is simple ignorance. A lot of Catholics in the U.S. simply do not know of the *existence* of the Orthodox Church. Many others know it exists, but they know nothing or almost nothing about it. In this ignorance, there is a real opportunity for the Orthodox to educate Catholics about their religion and to draw closer with each other -- if the Orthodox want that and if they do so from love.