Cronos, there is a little bit more to that. For one, +Augustine's "original sin" theory which was unknown and never officially accepted by the entire Church until after the Schism. That concept is directly related to our dogmatic difference in not just how but why the Blessed Ever-Virgin Theotokos remained immaculate.
The filioque is more than a linguistic issue. The papal supremacy, although of itself not a theological issue, is a serious one that was brewing from the 4th century onward.
These issues are difficult but not insurmountable. The problem the Church will have to deal with is to show that neither side was wrong on any of them. Once you move beyond individual Father's opinions and adopt them as dogma, if you move beyond what the Seven Councils declared, and add almost twice as many of them to one side of the Church, insisting they are ecumenical, it becomes a lot more difficult to reconcile.
I agree there's a lot more, but what I meant by "They stopped talking and misunderstanding grew over the centuries, causing the wide schism, which is now being bridged" reflects the fact that the two sides just stopped talking, no councils to discuss theological matters or anything. So, any issues of dispute were never discussed with BOTH sides to arrive at a conclusion, and they just lasted.