There are no rules for this discussion. Nothing is out of bounds. Nothing is already setteled or off limits. Here, for now, it literally does not matter what the SCOTUS thinks, or what the Second Amendment says, or anything about the news of the day.
That, after all, is inherent in the very nature of a Constitutional Convention. Clean slates all around, and survival of nothing but the absolutely intellectually strongest ideas.
This should not be a gun control discussion, and it absolutely has nothing do with RKBA. In the world of the future, if we so decree it, there simply is no remnant of the old RKBA. And we would, it seems to me, be wasting our time if we merely focused on "gun control". The purpose of the Constitutional Convention we are so long over due for as a society, rather, is to say "this is the society we wish to live in, and the following are a comprehensive set of measures we deem necessary for the creation, and/or the continuation of said social conditions." Rather than trying to design and administer bandaids, we would be looking at society wide solutions to actual society wide, long term challenges.
One reason why I'm sure that our Convention would choose to, at a minimum, tweak the RKBA, is because I'm sure that in revisiting each and every one of what we now consider to be our fundamental rights, deep consideration would result in anything and everything from routine housekeeping to important fine tuning. I don't envision Speech or Press Rights remaining identical with the 1787 language, and it is almost certain (at least to me) that we would choose to make stronger both a "Freedom of Religion", and a corresponding "Freedom from Religion". Likewise for RKBA.
For one thing, it's not at all clear to me how society benefits from pandering to the proclivity of some persons to engage in a "gun hobby". And "Gun Shows"? What the hell legitimate purposes do Gun Shows even serve? Firearms, on the other hand, readily fall into the form and function of the term "tool". Not everyone needs the same tools because not everyone engages in the same activities, or lives the same lifestyle. Clearly some people have greater legitimate needs for self protection than others, some people will have jobs where firearm access, and even use are normal activities, and society clearly could choose to continue the recreational route to habitat and population management, as opposed to putting ever larger numbers of professional animal killers on the public payroll.
Clearly all legitimate subjects for broad, and even spirited public discussion. And, obviously, to no avail if our Convention is anything but thoroughly inclusive, with any and every possible point of view represented by it's demonstrably best and brightest adherents.
And then conspicuous by there absence, and purely voluntarily so, will be the entire universe of talk radio luminaries. Hannity, Beck, O'Reilly, Coulter, Savage, Malkin, Limbaugh, the lot of them. In the market of grand ideas, freely expressed, such small and reactionary "thinkers" would present no competition. Take away their control of discussion, and they have nothing left to offer. I mean, "we're all on our own, and I've got mine so fuck you" can only be said in so many ways before the only thing that comes across is a constant drum beat of "we're all on our own, and I've got mine so fuck you". Love to watch it, but that would help no ones paycheck, so that would be a pure non-starter.
And then, of course, there's always the prevalent negative attitude on Daily Kos towards any really far reaching improvement on the status quo, or at least when the opeartive mechanism is the "Constitutional Convention" route. "Oh, we're too weak, they're to powerful, we'll lose everything, blah, blah, blah." I noticed how well the grand plans of the 1% to buy the last election panned out, and pardon me if I'm willing to believe the claims that demographics are 100% in our favor. I mean, as long as the Koch Brothers are able to get their billions in the hands of one of their resident genuises like Rove, the left might as well just continue to cower in fear of anything that might actually be the ultimate game changer. YEAH, RIGHT!!!