I suspect that this entire argument is rather pointless. IF unity were ever at the cusp of occurring, there would be many in both the western churches and the eastern churches who would never be satisfied with what the 'others' would have to do to be 'fully' part of the same church. It would appear that what would be ritualistically acceptable to say, bishops and scholars, would likely not be acceptable to a large percentage of the bodies of the current west and the current east. Perhaps our scholars should try to recreated actual ritual practice of say, 890 AD and impose the same on both the current east and the current west. Just kidding, but that thought points out the real world problems that this question poses.
Here is a novel hypothetical thought - if Rome were to offer a full 'release' of clergy, property and faithful to any Greek Catholic congregation or diocese for that matter which chooses to join the Orthodox Church with the 'flip' side of the offer being that those easterners who choose to remain loyal to Rome must submit to certain things - like acceptance of the universal, superior jurisdiction of the Pope in all matters of administration, acceptance of mandatory celibacy being one of them and submission of all Eastern or Western Catholics to the proper Ordinary bishop of a geographical area (as we do with the WRO) - that would create an interesting change to the current dynamic. However, that 'ain't' gonna happen any time soon..... And I would think that the 'takers' of such an 'offer' would be far fewer in number than many Orthodox would imagine.