Begin Realpolitik Analysis
I don't view this as much of a victory at all. Once again, the court has made a narrow ruling on a technicality that does very little to nothing to expand gun rights. All this does is prohibit may issue states. May issue states will not become shall issue states, they will become (at least de facto) no issue states once more.
And that is assuming that they bother to follow the ruling, which they likely will not. As we have seen time and again, court rulings mean nothing without the force of other branches of government, and if the fed does not force the states to follow a law they are happy to just ignore it.
Without a strong federal executive that is friendly to the 2A, I don't see this changing anything.