Some suggestions
 Like aadhar card make it mandatory to have ATMDebit Card
Every business outlet small or big shall have swiping machinespaytm like arrangement It must be made mandatory to run business
Stop printing Rs immediately And in future Rs  If not demonitize them six months before every election All elections hence shall be conducted on the same date henceforth
like indirect taxes integration integrate all direct taxes  collect them through transaction tax from bank as arthakranti suggested 
 Continue cash withdrawal restrictions even after Dec st  Reduce cash usage eventually and limit to Rs per month to individuals and Rs to  to businesses as per their turnover
 Gst shall be collected at first billing Stop input credit and collect turnover tax basing on turnover of distribution service providers and other small businesses 

More in later dates