Top-down reunification has happened before (such as after the Council of Florence) and lasted for relatively short periods of times. I think that while top-down reunification that lasts is more feasible in our age, it's the bottom-up reunification that is going to matter most. If the people do not accept the decision of the patriarchs then the schism will still de facto exist. Of course, if one were to be truly faithful to your patriarchs you would follow them through with their reunification with Rome, in my opinion. The reunification may possibly only exist in small numbers and the rest would be in schism with the newly reunified church.
Personally, I think what needs to happen is a synod between the Pope and all the EO patriarchs, and the college of cardinals perhaps, and a long time spent in prayer and dialogue to reestablish unity and the role of the bishops. This might be a bit too ecumenical for some people but what is necessary to do must be done.
Whatever the solution to the schism is and whatever ultimately is necessary for unity, I want to live to see it. I have read some articles and it seems like the patriarchs of some of the churches are open to dialogue, and what a patriarch says has much more weight then what a layman on an internet forum says.
Life is too short and the world is too moribund for such a profound disunity to still exist.
While I do have a hope for the union of our Churches I am also inclined to accept these words from Saint Nektary of Optina, the last Optina Elder who died in 1927:
Once N. Pavlovich asked the Elder: "Is it possible to hope for the unification of the churches?"
He replied, "No! only an Ecumenical Council could do that, but there will be no more councils. There have already been seven councils, like the seven sacraments and the seven gifts of the Holy Spirit. For our age, the number of fullness is the number seven. Eight is the number of the future age. Only separate people will be united to our Church."
"Wisdom has built herself a house with seven pillars. Orthodoxy has these seven pillars. But God's wisdom has other dwellings- they may have six pillars or fewer, and accordingly a lesser measure of grace." Saint Nektary of Optina
What about the eight beatitudes? What if we consider monastic tonsure and installation of an emperor sacraments, as some Orthodox do, so I have heard? (Correct me if I'm wrong.)
What about Constantinople IV and V and the Synod of Jerusalem, considered by some Orthodox to be ecumenical?
This quote sounds very poetic and wise on the surface but it really doesn't reflect history and all its nuances as it actually is.