How would reunification of the two Churches fix the liturgical problem within Catholicism? If this ever in fact happens, Rome would be restored as a Patriarchate and would still maintain their own liturgy. The only aspect that would concern the whole Church would be the theology in it, not the specific liturgics or rubrics.
There is an overlooking of the floodgates that would open when discussing, for example, the Papacy or Immaculate Conception. Theologically, the Orthodox view on the Immaculate Conception would lead to how the East views Original Sin, which differs from the West. Same goes for the Papacy. These aren't just disagreements or even differing views; they are in reality a different belief in how God works within the Church and what our salvation history really is.
The optimism is nice but if we're really going to work at reuniting, the tough issues also have to be confronted head on.