I guess there was a miscommunication,
I was trying to say that both 1960 agreements and also Annan Plan was offering equality of communities, by varying degrees. So anything that is drastically different than these which kill political equality of communities will not be accepted in the north.
You can ask how can equality may have different degrees. In math it can not but in politics it can. In 1960 constituion we were more equal than Annan Plan in terms if constitutional rights but, Annan Plan was making up for this deficit by explicitly stating boundaries and two states which are equal. So both of them can in my view be acceptable to TCs.
As I have said anything less than these that dilute the concept of political equality of two communities will not be accepted by TCs, and partition is better solution as the second best would be achieved for both.