Ballot paper will be 100 steps backward after the initial steps forward. I would still go the way of cryto but the issue is will people trust the software because that is what will make the procedure worthwhile. Paper ballot over here has been characterized with several drawbacks among which include snatching, mass thumb printing, maxi-voting etc.
Issues with ballot paper can be avoided if measures such as early voting and absentee voting are banned. Absentee voting is the main avenue for voter fraud these days. Remember the Franken vs Coleman race?