Sorry to but in and all that, but there are three choices.
The third choice is what is being discussed right now in the negotiation. They have to get the balance right or we are all on a slippery slide to partition.
If you are after complete unification in effect back to 60 without the problems, that is attainable but not now. That is something the future generations will decide, once confidence is restored.
At best, what we can hope for right now is co-existence with restriction to protect the TC’s from the GC government as well as the extreme elements in the south.