Don’t try to make mail-in balloting work. That is a fool’s errand and the bad guys will always find ways to abuse it and cheat. Ban it altogether. We didn’t use it for hundreds of years and there is no reason to use it now.
Yes, “Mail in voting is a privilege, not a right.” If you are too lazy or unconcerned to show up at the polls, we don’t want you picking our representatives.
Frankly, I’d like to re-institute a land ownership requirement. Land owners have the biggest stake in the game.