Brother Tauseef Ahmed, Who told you to leave the door open for prophets? Mirza Saheb! Was there any prophet before him in 1400 years? If this theory is right then why didn't Allah sent prophets in these many years? Was there no one eligible, amongst Sahabas r.a and early Muslims who excelled in truth and faithfulness?
Kindly stop mis-interpretting verse 4:69. The darajaat of Nabi, Siddique, Soleh and Shaheed, because of the obedience of Allah and Rasulallah (S), are very private blessings (not public issues) whether they are for this world or the hereafter. Tell me how and why should any one CLAIM .I am Nabi, I am Siddique , I am Soleh and start gathering followers aroud him? Especially how can Shaheed claim I am Shaheed , if he dies? One more thing can't women be Nabi, Siddique,Soleh or Shaheed, also? What if a woman claims to be Nabi , would you follow her? How many more divisions in Islam should we anticipate then, please justify?
Now about Sects, I don't think when Shias seperated because of a similar issue, they were "right". What do you think? Plus When Shias seperated, the rest were MUSLIMS , NOT SUNNIS. Those Muslim had nothing to do with the Sunnis of 200 years after the demise of of the prophet os Islam (S), because then they started following the myths of Hadith. Sunnis and Shias of today are HD version of those sects. Ahmedia sect is the most recent product of those Sunnis and Shias.
If Allah has forbidden making sects, then obviously no sect be PERFECT in beliefs. So the solution is not that other imperfect sects in their opinion should merge into one big sect for the unity. NO.The solution is to COME OUT OF SECTERIAN ISLAM and die as MUSLIM.
as Allah says:
يأيها الذين امنوا اتقوا الله حق تقاته ولا تموتن الا وانتم مسلمون
3:102O You who have chosen to be graced with belief! Live upright being mindful of God in a manner befitting to Him. Let not death overtake you but that you are MUSLIMS.
May Allah guide us to the right path. Ameen.Sincerely.F.