Lehigh,
I'll agree that the Lehigh could be better than it is, it could become a lunker brown trout fishery where 20 inchers are not unusual at all. There are other fisheries in this state, as you mentioned, that this could be/is the case.
My contention is that they're still not ever going to be on the same scale as the Arkansas tailwaters for truly trophy fish. A 20 incher is a trophy in my book, but in the grand scheme of things thats a 4 or 5 lb fish. I could see the Lehigh producing decent numbers of 4-5 pounders with the occasional trophy around 10 pounds.
The best trophy brown fishery in the state, and one with an awful lot of room for improvement, is still Lake Erie. They're thinking about trying to enhance it much as NY State does, and IMO, it could rival the NY State Lake Run brown trout fishery (hopefully without the snagging fishermen).