No need to get very excited about this, as we don't know who will succeed him. But I just hope that the replacement will be more friendly to the idea of cryptocurrencies. Also, there is a good possibility that the draft bill will be thrown to the trash bin and a new one will be compiled within the next 1-2 years.
How can the people expect some rapid change when the same government who is against the very idea of a decentralized currency is still ruling. The fact that most of the exchange who were running in India has shut their door and most of them migrated to other countries and that is the best option for companies if they want to survive and to make some profit in a new market and not to stick on to a country to does not care about its investors.
I don't think that anyone in the government (including the finance minister understands the concept of cryptocurrency). On top of that, the Reserve Bank of India (RBI) which took anti-Bitcoin measures earlier is an autonomous body, independent from the influence of the government. The draft bill, as far as I know was the brain child of Mr. Garg. Now it is up to the finance minister (Nirmala Sitharaman) to decide whether she want to accept the bill in its current form or not.
Ideally, India may gain a lot in case they legalize Bitcoin and the other cryptocurrencies. The Indian Rupee is not a weak currency, at least when compared to the national currencies of its neighbors. It had increased its value by 6% vs USD, ever since the NDA government came in to power in 2014. And at the same time, many of the other currencies such as the EUR and GBP went down against the USD.