Dear your 1st point of argument about Sindhi Hindu & Sindhi Muslim harmony is rejected by Hindu members them self........just read their post..........
Your second point about settlements of other sub-nationals identities in Sindh is again false as according to history of Sindh almost all Pakistan is Sindh (Indus Valley)............ in this case some are new and some are old sindhies....
BTW if you have interest in the history of Sindhi tribes, read their history you will find almost every single tribe migrated to Sindh in past, you will be surprised to know the little number of native Tribes of Sindhies.
your third point of Mujahir Sooba and Jinnah Pur is not related to this discussion.......so its better for you to discuss with some MQM guys......
on a side note Karachi is the BIGEST CITY OF PUSTOON POPULATION in the world......if Pashtoon are not living here with arraam...... tu phir kya KABUL me arram se rah reh hai......