Yes I know where you are coming from Elindor, I've made maps in other games for other mods (I choose not to in his mod for the very reasons you listed). The problem lies in the fact that NA is red-headed stepchild. Once a shitty map goes into rotation (which happens on a regular, almost weekly basis) it takes months to get it removed. In the meantime, big server like siege is severely impacted and it KILLS a game type.
Hell I'd put up 5k cRPG money for a map maker per new map if it was tested in some fashion on a 10-15 slot server. Make some sort of schedule or something.