Okay then lets see how far this goes.
I am sorry I may sound some self righteous nutcase but here is the thing .... Sunni, Shia, Ahle Hadeeth, Baralvi, Hanafi, Deobandi etc etc etc and all future sects that remained to be formed to accomplish that goal of 72 sects are all creations out of history written by men ......... all of these have nothing to do with Islam ........ a Muslim cannot be a Sunni, Shia, or whatever other divisions we have created out of our insecurities and ignorance and labelled them to be true Islam. One should try researching and studying Quran and understand that sectarianism is a sin (wrong doing) placed one level above shirk (making partners with one and only ALLAH all mighty).
Kalima is a ceremonial oath and not a prerequisite for one to be become Muslim or accept Islam. The conditions for one to become Muslim have been clearly laid out in Quran, I will list them down in random order and narration for your reference
- Firm belief in oneness of ALLAH and refraining from making partners with him. Total submission to HIM with firm belief that HE has no sons and no daughters and all of us are HIS creations
- Firm belief in day of judgement
- Firm belief in all the Messengers, Prophets and Messenger Prophets that HE has been designating from time to time for guidance of different people
- Firm belief in Quran and all the other books (every Messenger was given a book) that had been given to Messengers (peace be upon on all of them) who came before Messenger Muhammad (Peace be upon him)
- Belief in angels (Malaika), the creation of ALLAH
These are the five prerequisite for one to come to Islam (sadly the sixth one "Belief in fate had been added by men") ............. but even after fulfilling these conditions one still has to prove by his actions that he is a Muslim. In Quran it is said "Do you think their mere acceptance of Islam with their tongues is enough, they will still be judged"
Kalima is fine but believing that it is the prerequisite .... well all of the Messengers (Peace be upon them) were Muslims, it is not proven that they were asked to recite Kalima to submit to Islam.
Wrong as explained above. It is a ceremonial oath and it should remain so.
Lahori group believes that G A Mirza was Mahdi, Qadiyanis believe that he was Prophet.
Mehdi himself is a fictional character, born out of intrigues and rampant hear say business that was at its peak during Abbasid rule. Just look at the state of Muslims nearly all of them are waiting for Mehdi to come and solve their problems and bring back the glorious days, just witness the reluctance to step forward and taking ownership of their own problems, lazy rears waiting for someone to appear magically one day and get done with all the problems in no time, wage war.
Messenger Muhammad (Peace be upon him) has been called Khatim Un Nabiyeen (The seal of Messengers) which translates into the final Messenger with the final book. Why Muhammad (Peace be upon him) is the last Messenger and why there is no need for anyone else to come after him with a new book? It seems that it was all planned with gradually evolving mental level of humans. Quran has passed the test of times and remained uncorrupted, if it had been the case similar to all other books a new better book must have been revealed .... but no that is not the case, with passage of time it is becoming more and more evident that Quran is the final guidance for all the humanity to come. You should read and study Quran (without consulting centuries old man written interpretations) for both guidance and knowledge scientific and social. It will amaze you.
Now coming to G A Mirza if he claimed to be Mehdi ......... then one can read critically all the historic narratives in support of and against appearing of Mehdi ........ I am pass that stage and I believe there is no Mehdi coming, anyone with righteous intentions and character can be a Mehdi of his times plus I firmly believe that Our (both as Muslim and humans) condition is not going to improve unless we ourselves strive to improve it (as already told by Quran). So even if he claimed to be Mehdi it doesn't matter but what went wrong is his claim divided the Muslims (which I have already stated is against Quran and Islam and a sin one level above shirk).
On the other hand if Mirza claimed to be a Prophet then educated well versed Qadiyanis need to inform us how he passes the test of "Khatim un Nabiyeen"? Where is the better book? Where is the stamp from Messenger Muhammad that Mirza would appear as Prophet? Look at Quran and its way of addressing humans and look at how Mirza sb addressed the people. And let me be very honest here even Jesus is not coming back ..... its all already in Quran about Jesus. And if you wish you can read Kamal Salibi an Egyptian Christian to confirm that Jesus of Quran is very different from Jesus that we know of.
Don't know about Kafir munafiq or whatever but in my very unlearned view they are pretty educated people who got misguided.