VAFFPAX,
thks for your contribution. I concur with your point, although I would insist that planes taking off from 20 are reaching densely inhabited areas within 2-3 miles from rwy threshold. Therefore heavies are still low.
Our point has always been, why use a shorter--claimed to be completely safe--runway when you have 2 longer ones? BTW people were expropriated in the 70s to extend 25L. 25R was extended, as well.