The reason why is very simple, in countries like Brazil, a lot of players enter the game and come to think the community is dead, even tho there is 3-4 active full servers at the moment. This impression makes players not come back and give up on playing with new people.
#Show servers even when they are full and put a filter "Only Show Servers Not Full"
open hill
golden linden
i dont see the point of showing lobbies the player cant join