I agree that incrementalism is certainly a fair strategy, as the antis have been doing it for decades, but drawing attention to the functional uselessness of the SBR restrictions only sheds more light on the bizarre juxtaposition of banning weapons that supposedly have no place in the militia, as extended to the permutations of the weapons actually covered by the NFA.
I would be very interested to see an argument brought before the court that the very weapon Miller was arrested for possessing is, in fact, functionally similar to the Mossbergs that our 11Bs are using to blow off door hinges downrange.