Mail-in ballots should only be for disabled voters (possibly verified by a doctor) and not widespread for the sake of it.
It is too easy to cheat/manipulate/harvest.
This is the problem and I believe they were brought in because of COVID
If you want to vote you need to get off your a$$ and also provide ID at the polling station.
If there are voting machines they need to provide a proper paper trail... Personally I would not allow those machines in any case.
It’s not difficult to run an election and count the ballots and declare results by early morning.
I agree that proving fraud occurred will possibly help future elections but all it will do for this one let Trump say “I told you so.”