I have to agree, if SCOTUS takes up this case, it will be the landmark decision on individual rights under 2A. If they rule that it's a home rule issue, meanig the 14th doesn't impose 2A on the individual states, but merely restricts federal laws, it could well be the beginning of the end. If they rule the other way, as they have for 1A, 4A, 5A, 6A, then it is a new beginning.
If I was on the bench, (the SCOTUS bench, not my little one here in Ohio), I would argue that the intent of the Bill of Rights was to protect the individual against the State, meaning the individual against all government, whether it be local, state, or feredal. While the "State's Rights" argument does have some historical appeal, in that the Bill of Rights was drafted to encourage the state's rights people to ratify the Constitution, I cannot see how the 14th can apply to only select few atricles of the BOR, and not all. But that's just the opinion of a lowly magistrate in Ohio, where the State Constitution also protects the right to keep and bear arms. Art. 1, Sec. 4.