Ten things for India to achieve its 2050 potential, by Jim O'Neill and Tushar Poddar of Goldman Sachs does a good job of summarising the economic policy reforms agenda for the next government.
The 10 tasks are big and complex, and each requires a book-length treatment on translation from ideas to action. E.g. in the case of #6, financial sector reforms, such groundwork has been laid in the form of the Mistry and Rajan reports. Similar work is needed on the other nine as well.
On the subject of the macroeconomic policy framework, you might like to see this.