A couple of points. Allowing ballots to be accepted up to 17 days after the election invites chaos and conspiracy theories. The end result will be much worse than going to a local polling location or using a drop off box at a secure location such as our Police Department. Those have always been options and they work.
It seems that our money would be better spent providing more voting locations and get the word out of where they will be rather than creating a brand new system that hopes to track mail-in ballots. Those in IT know that things sometimes do not go as planned. Just my thoughts.