They need to get rid of income taxes and GST.
Honestly, if they do not do this now - there will be nothing to tax in future.
Permits, licenses also need to be removed barring some sectors which include healthcare, education and food.
Also land is a big problem in India, government should overtake all the land and lease it out for good use and not allow any person or entity to own land. People seeing land as a store house of value is really bad thing!
Get done with import duties because this is making local manufacturers weak (use indigenous shoddy tools you end up with shoddy output), remove unfriendly rules which prevent foreign players from selling their expertise here.
Annex private gold holdings, it will be next big thing after demonetization. It will make the citizens more equal.
People should know if there is anyway to get rich is not by hoarding land or putting money in bank, but by starting business.