I hate to take the other side but I really would prefer to keep guns out of national parks. I go up to Shenandoah National Park as often as I can and there is no reason I can think of to have a gun there and frankly, it sort of spoils the reason I go there if there are armed people tramping around in the woods.
How does it spoil the reason you go there? The guns are concealed, so you presumably don't even know who is armed, which incidentally has been the case all along.
Would you really make a case that individuals who can be trusted to CC with a license in an urban area are somehow unsafe with a gun in the wilderness?
With millions of open acres of land, and very little if any cell phone service, I can't think of a more appropriate place to take responsibility for one's own safety.