So which alternative do you prefer.
This is my paradigm, as always subject to change, (maybe even by the end of the thread

)
I think there is a bit of a slippery slope when it comes to gun laws. I represent this with the angle of the curve below. Per the diagram/my thinking it's pretty easy for WY to get to NJ level laws if they open the can of worms... but really hard for Mass to get up to Japan level laws (too much political capital, i.e. law of diminishing returns).
Green box is where gun laws actually start having a difference both in how it feels to an owner and on preventing gun deaths. Kinda hard to compare states/countries for "strictness" so just go with it, I was just trying to convey they idea that there is a spectrum with jurisdictions all along that spectrum.

So my thinking, if you aren't in the box, to some extent, why bother.
General things I've noticed. Europeans like taxes and doing things collectively (coasters are more amenable to it as well). American's hate taxes, prefer tolls to taxes... and we love Status, credit card status, airline status, etc.
Therefore, I think if laws are going to do squat (and I hate ineffective laws) we as a country need to trend towards the green box in our own way a way that respects our values.
My preference would be for a federal level TSA precheck style gun licensing system.
It would be very onerous and rigorous, but completely voluntary. The license would allow; concealed carry in all 50 states, purchase/ownership in every state, allow possession of suppressors (without all the trust bs), and you would get to skip background checks at purchase you just have to show your license and move on. For online purchase, you would enter your license number then use facial recognition on your phone, so it would in effect allow home delivery of firearms, and private transfers without FFL.
It would requires background checks, classes, firearm registration, proof of secure storage (inspection official), etc. No grandfathering in.
This would not replace or preempt any current state system, WY gets to do their thing MA gets to do theirs. There is still the regular line at the airport, there is just a fast lane for those of us who are truly responsible and willing to prove it.
If you like your gun laws you can keep your gun laws.
I honestly think the people that would be compliant in your mandatory storage law would be the kinda folks that get his type license.