There is no question deer numbers, over all, are down in PA. I live with the huge Bald Eagle State Forest system in my back yard, and have seen it. Back in the 80's, we would hunt the big woods, and see plenty of deer, and most everyone who wanted to fill their tag did. Now the bucks were usually small spikes or fork horns, about the size of my German Shepherd, but the opportunity was there. Guys wanting a "trophy buck" usually hunted private land.
Now days, when you see a buck, it's likely to be a nice, mature specimen. Problem is, the "when" part.
You can manage deer for quantity, or for quality. In an age where hunter numbers are shrinking, and most guys are just happy to put meat in the freezer, I too question PA's deer management strategy. I realize you cant stock pile deer, but as you stated, the carrying capacity of the land is no where near its limits, especially now with doe tags given out by the handful, and the traditional 3 day doe season now running 2 weeks plus in most areas.
Whats the answer? Maybe certain zones set up for Quality Deer Management, and certain zones set up for normal management / hunting as it used to be?
And you are dead on about the bear numbers. I spend a lot of time in the woods playing around with my camera gear, as well as hunting, and I have seen more bears in the last couple years then I have ever seen. Heck, I even got bluff charged by a sow last summer when I got between her and her cubs. That will get your attention...