Bill, indeed I have but maybe that's through a lack of clear understanding on my part. Let's look at your ideas and maybe you can add some clarity for me.
Raise the age on purchases of non-hunting firearms,
Please give the proposed age. Please describe the non-hunting firearm.
tighten up the application process,
How so? Two forms of ID? FBI background check? Firearms training certification?
hammer anyone caught making a straw purchase
How so? Fines? Who does the hammering and what is the process?
(maybe some law that says after buying X? firearms a year one has to prove they still have them in their possession,
What value is X? 10? 100? How frequent are the checks? How is that done? Are you suggesting that gun registration is necessary?
have paperwork documenting the transfer, or if lost or stolen a police report is required),
Again, are you tacitly arguing that some form of gun registration is necessary?
mandatory severe jail time if caught with a stolen firearm,
Again, are you supporting registration? After all, we're talking about someone's freedom here.
laws requiring owners to be more responsible with managing/storing the weapon,
Fine. Please describe the law. For sure you wouldn't hold me and my buddies in our Elk camp tent to the same standard of care as a parent with kids at home? What scale of detail are you thinking?
confiscation if mental health becomes an issue, red flag laws,
Great. Where would you invest that authority?
significantly higher training requirements to obtain a concealed weapons permit and ongoing training to keep it,
Please detail "significantly higher".
liability laws/exposure for dealers that make errors,
Like errors and omissions insurance? License suspension? Specifically what are the "errors" and who will decide?
strengthen the requirements to obtain and retain an FFL license by requiring a minimum number of transactions per year
requiring all current FFL holders to sell lots more dangerous guns really a good solution? Just which guns are they selling that makes selling many more a societal benefit?
special application process for any long gun that can hold more than xx rounds in a magazine,
What is xx? 10? 30? How many of each should a user own?
shotguns that hold more than 6 rounds should be considered assault weapons,
This one is a surprise. Not for the number 6 but because you apparently do have a definition of an assault weapon in mind. Please explain.
limit mag capacity with pistols to 10-12 rounds,
Seems a reasonable number, I guess.
mandatory prison sentence of 10 years for any crime committed with a gun, etc. etc.
Why 10 years? And would you distinguish between the types of guns?