We will look into further support for the Map White Listing process. Obviously the interface has not been set up to give enough feed back and options for this new system.
As for the removing Perk Building maps, we are going to have to count on users to help prune the existing list. We simply got rid of KF-PerkBuilder and KF-Leveling type maps. I will be going through all new maps, but there were simply too many in the initial list for me to play through all of them. Perhaps, though, I'll go through the list in the next couple of days while I'm adding some requested maps.
And yes, this thread will be updated whenever the Map White List is updated(which will only happen when we release an update).