My point is that your appear to be assuming the nation is having a rational conversation about gun control. We are not having that on the national scale. Instead we are seeing a concerted propaganda effort to push more gun restrictions on law-abiding gun owners in an effort to reduce the number of gun owners over time through increased red tape and reduce their political power.
In that environment, proposing actual solutions is a moot point because your opponents do not care about actual solutions. They have already acknowledged these proposals will not reduce crime or stop active shooters. None of the proposals would have stopped Newtown and the only proposal supported by the NRA (increased money to better report mental health to NICS) is the only thing that might have made a difference in Aurora, Giffords, and VA Tech.
If you live in California and don't understand it by now, I don't know how to explain it more clearly. Offering reasonable solutions won't change the response because your opponents don't want solutions and are not reasonable. They think that getting rid of guns is the only way to go and they aren't interested in solutions that don't advance that goal.
Several of your points are useful, not because they provide a solution or would change the dialogue; but because they would force the antis to acknowledge their hypocrisy by opposing non-controversial things like gun safety and actually preventing future tragedies. However, unless you can get that through the incredibly hostile media filter, pointing out the hypocrisy isn't all that useful. Look at the recent Senate hearings - if you watched that on CNN or MSNBC, you'd never see the great pro-2A testimony. You'd see a highlight reel of Wayne LaPierre's biggest flubs, every piece of anti-gun testimony, and then a cut to montages of past shootings while Dave Kopel testifies.
So when you ask "What would the response be?", I say "It would be the same because the other side isn't interested in possible solutions that don't further a reduction in legal gun ownership."