Thanks for organizing this, but I take some issue with your rating system and comments.
Not ALL maps have to be good for ALL classes ALL the time.
It's OK to play a cramped map sometimes -- I like them. Get in close, clusterfuck. Ranged and cav may struggle, but it's fun stuff.
Sometimes we need a cav map to let people stretch their legs. Get the pikes!
Some maps may favor ranged, and adds a new dynamic and hazard to cope with. It's fun and keeps it interesting, in my opinion.
"Perfectly" balanced maps are good too! Keep them in rotation and have lots of them, of course.
We also need small maps. Servers are never full (I predict population will trend upwards for a while, then slowly downwards) so don't discount small maps. Very important.