I find this idea very interesting, the inclusion of the ID of the users who are voted for.
It is true that it will be more work for those who vote, but it will guarantee the votes for those who change their username.
I can guarantee more people will mess up if they have to jump through hoops. Some already write names incorrectly, but it's still obvious who they mean. If they add the wrong userID, it gets worse.
Username changes are rare, and there's no doubt who the vote was for.
Totally agree.
I was jokingly referring to that when mentioning that voting via ID would favour AIs.
Voting via ID would also make counting votes extremely more difficult, I guess (I suspect it is done by hand).