Chris you might be right about the hemlock. On the other hand, thankfully the HWA has still not arrived in the Allegheny National Forest. There is some hope that the colder winters here may be a limiting factor. I sure hope that's true. We'll see. (This winter certainly hasn't been very cold though.)
On this road they did plant some deciduous trees along with the hemlocks. Looked like yellow birch.
In terms of other conifer species, it was probably a touch on the shady side along this road for white pine. Me personally, I wouldn't have a problem using Norway spruce even though it's not native. It doesn't act like an invasive, and planting Norway spruce would be a way of hedging our bets against possible future loss of all our hemlocks around here.
"There is no better way to save biodiversity than by preserving habitat, and no better habitat, species for species, than wilderness." --Edward O. Wilson