Piratis, in view of the fact that a large proportion of TCs that currently hold a RoC citizenship (and also via it an EU citizenship) will most likely opt to retain their status and remain within the boundaries of the area under the RoC, and because no EU country has the right to eradicate such citizenship status to anyone of its people without their personal consent; would you agree that depending on the proportion of such TCs choosing to hold on to their current RoC status, there should be a further equivalent proportional reduction in the area that will be partitioned for the TCs? What I mean by that is that if let's say 50% of TCs will choose to retain their RoC and EU status, then the area of the partitioned state will have to come down to 9% of the area of Cyprus, etc.
An easier way would be to first have a referendum just among TCs to ask them if they want to return to RoC. If they reject this, then after a few days the second (above) referendum can follow for both GCs and TCs.
The Annan plan has shown that it is not really a problem for the UN to make a plan that goes against some of its own principles, and the EU had also accepted to close its eyes to this in case the majorities of people on both sides accepted it. So I don't think it will be a problem for them.
Of course your proposal could also be an option (different than this one) where they would ask each Turkish Cypriot if they want to be part of RoC or part of a separate TC state. Then they will count how many TCs want a separate state and give to them a part of land proportionately based on how many they are. This sounds fair also, but now lets see how many would accept what I proposed.
So what would you vote in case the above was in a referendum approved by UN and EU?