The system we are discussing now is not proportional at all. We would be voting for two presidents. While the votes of TCs will have full effect in both elections, the votes of GCs will count fully only on the election of one of the two presidents. For the election of the president who will rule Cyprus 1/3rd of the time the votes of GCs will count for far less than the votes of TCs. Personally I refuse to vote in an election where my vote will count for less than some others, just because those others happen to be Muslim and speak Turkish. This is a racist discrimination I will not accept and I will never recognize any "president" which is not democratically elected by the Cypriot people.
Of course you can imagine a worst systems, e.g. we could have directorship with no input from the people at all or the system that the Turks want. But just because worst systems exist this doesn't make this one a good one.
Ideally, it would be best to have a single electoral list with a 1 man 1 vote system but unfortunately, the Cypriot political system in a unified Cyprus will have to go through a process of evolution before it matures into something better. I just don't think it is realistic to do it all in one go.
"If you didn't like it you shouldn't have signed it" Does this remind you of anything? And how do you think it will change in the future? We can propose such changes, but why would the TCs voluntarily accept to change something which suits them?
Hoping that we can make something better after we sign away our rights and accept to be second category citizens is even less realistic.
In my opinion we should have insisted that the presidents should be elected on a common ticket. One GC and one TC to campaign together and be elected by Cypriots as a whole. Then the presidency to rotate between them. Such thing would already be a compromise from our part and nobody can claim that it is not "political equality" of communities.