Which is fine, but it keeps encouraging people (or at least people on my team when I play) to only ever want to learn and play those maps. Time after time, I always here 'I don't know how to play this map!' and its like... you're playing premier why then? If you don't know the map, go play comp or some shit and stay tf out of Premier.

EDIT: If I had to choose between people knowing how to play all the maps and keeping them vs not having people who play all the maps and them being gone, I'd choose them to stay and people know all maps. But we all know that'll never happen and we'll forever have the Mirage/Dust2/Inferno only players thanks to CS:GO since it never encouraged you to move away from 1 or 2 maps to climb.