FWIW, Franklin/Philadelphia Mills, Neshaminy, Moorestown, Plymouth Meeting, Cherry Hill & Deptford malls are all still open & have some overlap with shoppers in KOP's area.
There's nothing wrong with not knowing a lot of malls, but come on, you have to qualify your statement a little bit, because your comment doesn't make sense to me as someone who can drive to KOP and at least a half dozen of the other malls I've been to when I was younger.