I really don't see the need for location. It's available in the profile and many put somethiung other than their actual location there anyway.
Same with join date; except that people can't modify that.
Post counts as well can be found in the profile and are frankly nothing more than a merit badge; it's not like an active poster can't get 100 posts a day in general discussion threads.
Besides, Aquarezz said to do away with post counts.