I think there are several non-voters who are just as invested as the voters. I wish they could submit ballots, because their opinions and contributions are adding a lot to the project. I can only respect their choice not to go all-in, even if I'd strongly prefer they were voting.
That being said, this forum's history is not entirely clean when it comes to attempts to rig votes or treat academic debates like a personal competition.
@quoipourquoi 's post above reminded me of that, and I can very much imagine something like a
Bure vs Forsberg matchup causing us to suddenly have votes with one at #1 and the other at #15, and meaningless rankings in the middle. I think that's really what makes it non-practical to open up the voting beyond the group which has formally identified as participants.