Dude, you can made up all the stories to self appraise but it's fact that
1. Muslim league was formed by Bengalis because the Muslims were marginalized and discriminated there, hence they needed to raise their voice to demand and protect their rights.
2. It failed to create interest of Muslims of western frontier in it because they had no such issue, contrary to that they had strong presence in Army, Provincial governments, Police, in good numbers in Provincial civil service and were given lands as appeasement policy of British.
Your last part is even funnier, Idea of self governing state of western provinces under british raj was first floated b Allamah Iqbal (very important and dear personality for Pakistanis but not for Bengalis), Ch. Rehmat Ali (again very important person for Pakistan but not for Bengalis) wrote clearly in his pamphlet what he meant by Pakistan even wrote details about it in his book (He died in 1951).
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