I've never QMD/U a map, since the feature was implemented. I'm sure there are a great many other people that's never done it either... Or? How would one differ from the class based voting to the "I-think-map-is-[constructive criticism] voting? How consistently do people vote? One time only? Every single time the map comes up? There could be so many reasons for voting up/down a map that I rather just take a couple of peoples constructive reasoning, then some bunch of random votes (because they become useless so very very fast).
This has however nothing to do with the topic, so if you want to discuss further please make another thread.