I just hope they keep this play list. Limited time is for sales pitches, not features of a product. If you can make your game that much more enjoyable, why not keep it that way. I understand it takes away from other play lists and in H2 you had to condense to make sure you could find matches in slayer towards the end of it's life. This isn't the problem right now, keep the variety and let us slay zombies on the regular.