If that is declared the standard test, far and away the majority of current restrictive laws on guns will be on very shaky ground and would likely fail in future court challenges. It is a big deal.
What empirical evidence is there that courts with an anti firearms bias will not still find grounds under any standard to support gun control? Whenever an action comes out like this which seems negative, folks say it is really good because:
1. It sets up the wonder case that will wipe out all the 300 new local restriction and free up the old ones.
2. It gives them time for the SCOTUS personnel to change to gun rights zealots.
Heller was going to change the landscape but it's ambiguity was used to support local court bans. NO, they were wrong, they misread it - so what, that's what happened. Yes, there were dissents but a dissent isn't a win. IL did have a positive Heller based result.
Remington - hope that it would protect industry. Well, it didn't and some folks think (I posted this elsewhere) that companies are being set up for a wave of suits. However, folks say that Remington's travails and the travails of other companies to come are good news because once again it sets up the magic SCOTUS case.
NYC - great news, because it might set up the next wonder case.It's like the Japanese in WWII. Every naval defeat after Midway was good news because it would set up the great fleet to fleet battle that would destroy the USN.
If the so-called progun 5 were committed to action, we wouldn't be in the legal weeds of scrutiny being the cure for some hypothetical case 5 years down the line (as restrictions proliferate, strengthening precedent, rampages continue, moral panic ensues yet again). They would have taken the Remington case and said they were protected. The NYC decision won't be mooted or limited. Carry restrictions for law abiding citizens would be voided or very easy shall issue mandated. Fat chance.
Now, I'm not a lawyer or constitutional scholar but I look at the behavioral outcome and I don't see much lately - except a ban on a stupid accessory. New judges - wait until a circuit voids state bans over a wide area before getting excited about them.