Incorporation under PoI would have more impact than just due process especially for uniform CCW.
McDonald affords two interesting prongs . . . The biggest potential rollbacks of unconstitutional laws will be in states without a state constitutional RKBA provisions. States like California and especially NJ never established a sophisticated legal justification for their gun control laws within the framework of their state's constitution / laws. They lazily relied on the lower federal "state's right" and/or "collective right" holdings from the 1940's (Cases, Tot) and basked in the luxury of the 2nd not impacting state law.
California's primary holding for denying the gun rights of individual citizens is Hickman and as the 9th said in Nordyke, Hickman is toast:
". . . we must first decide whether Heller abrogated Hickman. It did. Hickman rested on our conclusion that the Second Amendment protects only a collective right; Heller squarely overruled such conclusion. . . . Thus the basis for Hickman’s holding has evaporated, and the opinion is clearly irreconcilable with Heller. In such circumstances, we consider our prior decision abrogated by higher authority."
http://www.ca9.uscourts.gov/datastore/opinions/2009/04/20/0715763.pdf">Nordyke v King, pg 4475-4476, (April 20, 2009) (194KB .pdf)
There is no possible justification for the en banc rehearing decision to alter that holding if McDonald goes our way; thus much of California's gun control schemes are resting on infirm constitutional ground.
New Jersey is another state without a RKBA provision and a very thin RKBA case law of its own. NJ's courts also lazily relied on Tot for validating NJ's ID cards and purchase permits, registration schemes and a myriad of other state and local discriminatory practices (see Burton v. Sills,
http://www.abanet.org/gunviol/docs/burton.pdf">248 A.2d 521 (N.J. 1968). . . It is all on life support now awaiting the order to pull the plug to be issued by the Supreme Court.
The second factor will be McDonald inspecting the extent of governmental authority under the situation of a state having a RKBA provision but expressly conditioning / limiting it. The Illinois constitution's RKBA provision conditioned their RKBA, "subject to the police power." The Illinois provision was enacted in 1970, I'll leave to the reader to discern what societal issues were paramount in the period before the provision's enactment. Illinois had no RKBA provision prior to 1970 and IMNSHO, the "RKBA' provision was written to enable strict gun control to be written, not protect rights.
So, in honesty, based on the rulings of the Supreme Court (including Heller, which could not address incorporation), the 7th Circuit's own decisions and also guided by state court rulings that followed the applicable law, the 7th Circuit had only one way to rule, exactly as it did in both McDonald and the NRA cases.
I welcomed the 7th's decision; unlike California and New Jersey, Illinois has had a very deep and extensive examination of their citizen's
CONDITIONED RKBA and SCOTUS examining that legal history in the context of the 2nd Amendment being applied to the states will result in a quite comprehensive, philosophically deep decision in McDonald.