You are quite right in saying it is an option, but you are years ahead of the rest in how you think. It seems we all are ahead of the curve ,even me. Maybe in the next two or three years this will be raised as an option and it should help the numbers voting I believe.
I think that in Estonia they have digital voting to some extent already, but not blockchain. the countries that will adopt the fastest will be the ones that can normalize it for national cases.