I agree, it's not possible to know if someone will participate in the future or not, so it's pointless. We are here to find the best map for the project and every help should be welcome.
My point was that if someone is sure at 100% that he won't participate : he should not vote because I don't want the participants to end with a map they don't like. BUT, I would gladly accept their vote if they review the maps.

On another topic, do you think it would be a good idea to take the best of all posted maps and put it together?