Sorry to say this but Bangladesh was to be made anyway go deep into history before 1947 Partition, learn about it, It is important to know for many today Bengalis and Pakistani's that if Bangladesh would not have accepted Pakistan as their country and stayed independent state. They would have faced the same fate as Hyderabadis or Kashmiris. If the Quaid was alive, he maybe would have made East Pakistan a separate country later on or maybe convinced them to live with us but we lost the great leader very soon due to which many important decisions could not be addressed by him.
Note: If everything even after getting independence would have been the Quaid's way, we wouldn't be fighting for Kashmiris right today but rather Kashmir would have been the fifth province of Pakistan and we maybe would be today fighting for Hyderabad or Punjab lands which we were deprived of. Alas the deteriorating condition of Quaid and his team which was not much up to the mark to fulfil his vision has us in present disputes.