I will address the points you have raised. Just like you, I am not interested in confederation. The adversaries of the Annan Plan were quick to daemonise it and one of the accusations they projected was that it called foe confederation. The Annan Plan was indeed a complicated plan but it did not provide for confederation. Suffice to say that the EU accepted it and as we all know, under no circumstances Brussels will accept a confederal country. The Annan Plan did provide for a federal system in which the new Cyprus would have one sovereignty, one voice one nationality and one international representation. The components states of the new Cyprus would not have the right to break away and declare of independence. The new Cyprus would have been a federal Cyprus! The EU, as stated earlier, would never accept in its ranks a confederal country.
The only thing which was "united" in Annan plan was our foreign affairs, and thats was so the Turks would be able to veto everything the Cypriots decided and therefore Cypriots would have no international voice at all.
How about if we return to the Ottoman era? Cyprus would be "united" under Turkish control, Cypriots would be divided between Turks with more rights and Greeks with less rights, we would have no international voice, our lands would be taken from us by law and given to Turks, our human rights would be violated by the law - just like all slaves deserve, and we would all be happy that we have a united island. Not much different from Annan plan. The only thing that would be missing would be the 1000s of Cypriots butchered by the Turks, but that would certainly come soon after when the defenseless and unarmed Cypriots would realize the mistake the made and try to revolt for their freedom and self determination.