Ultimately, it really needs to be addressed by the US Supreme Court. The only correct ruling should be that it is unconstitutional. Magazine capacity restrictions are an arbitrary and superficial restriction on a constitutional right. They're not based in any quantifiable or measurable fact. Why not 9 rounds? After all, that should be 10% "safer", right?! If not, why not 11 rounds? That should be 10% "more reasonable" while "protecting rights" more than 10rds. It's preposterous. It can only demonstrably affect law-abiding people. I think the angle that needs to be focused on more heavily with this subject is how insidious these laws are towards criminalizing otherwise law-abiding people. Like you have an 11rd mag in one state, take a trip one state over to the wrong state and could potentially go to prison and lose your rights. All over 1 round. The law should not be that arbitrary, vindictive, and punitive over such a small and arbitrary thing. The only corrective measure is to make it so that those laws are never allowed to exist in the future.
It is sort of the same thing when it comes the NFA. 16" rifle barrel legal. 15.99" barrel without a tax stamp? Could be 10yrs in prison and a $250K fine (I'm quoting from memory, so maybe I'm a bit off), oh, and BTW we might send the ATF to Waco you over it. That's horribly abusive and predatory.