No way blue states will give this up. They have a lock on power. It will require an amendment and I’m not sure there are enough states left that care about voting integrity.
If cheating is possible, it is happening. This should be the starting point for the design of any voting system.
Florida does it right. They will mail you a ballot if you have signed up. It goes to your address. Postage paid return and you must sign it.
They do examine the ballots by comparing signature.
Once in a primary my wife goofed up ballot. They contacted her and cured the ballot.
They do from time time verify that you are alive and still a legal resident of Florida. They check available databases.
I would not trust New York or California to run this system.