No editing of votes, period.
Exactly. If you want to vote strategically, wait till the very end, like I like to do since I'm often around in the last few minutes of voting.
But being allowed to change your vote after knowing where things stand sounds like those old Jewish retirees in Palm Beach County in 2000.
I also think there should be a clear layout of each region's ballot and instructions at the top of the voting page and perhaps even separate booths for each region to vote in (though I realize that might be a little complicated for the SoFA to handle).
I also think that there should be a help thread during elections for voting questions or troubles certain voters might have.
Just some thoughts.