Re: Story of languages!
Kannauji is my all time favourite dialect in Hindi 
Sanskrit letters are used in almost every Indian language, even South Indian language start with A Aa E Ee…, The syntax of sanskrit is different from Hindi. Hindi has just singular and plural for noun and pronoun while Sanskrit has singular, then for two, and then for many (plural)
Wah jaat hai- Sah Gchatih
Wo dono jaate hain- tau gchatah
Sab Jaate hain- Te gchantih
Hindi has just two form, singular and plural, grammer of Hindi is more similar to English then to Sanskrit
So what hindi maximally got from Sanskrit is words, Tatsam-directely from sanskrit and tadbhav- slight aberration of sanskrit
My name is kaur becomes Mam namaah Kaur Asti
I never understood South Indian’s reluctance to learn this language, even punjabis were reluctant initially. Learning english doesn’t hurt them but learning Hindi does
The way Hindi is expanding, it will become national language automatically, another case of De facto becoming De jure
Yes, Hindustani is biggest language group followed by Bengali
No, Urdu always had status, it was language of princely elite, the language itself was patronized by Muslim rulers and even like in case of Ghalib by British as well. Hindi on the other hand was never patronized before independence, Tamil was patronized by Cholas, Telugu by Vijayanagar empire, Kannada by mysore but hindi was always orphan, gathering itself and standing on its own, produced wonderful Ramcharitmanas and Sur Sagar and then contribution by muslims like Abdul Rahim Khan-e-Khana and Krishna devotee Raskhan.
Malik Muhammad Jayasi was the first individual who wrote book in Khadi boli (standardized hindi) called Padmavat