That sounds like fun! I'll have to try it.
I empathize with the frustration that nothing is being done, or at least the perception that nothing is being done (gotta give the FBI credit where they've earned it for hunting down plenty of freaks over the years).
Thanks for the compliment. Mental illness is certainly a factor, but not nearly to the extent some would claim. If anything it's more of a broken family issue.
I'd question the real effectiveness of limiting firearms to manual-action though...you could still drop a lot of people quickly with a lever action rifle. Heck, you could take out several with a bolt action rifle, and that's the problem; a single death is one too many. So I'd take a different track and suggest something to the extent of, "PROVE that you're a decent human being and then we'll stay out of your hair."
Maybe it takes the form of having to pass a psych eval (not a full scale all-day test, but at least a decently thorough questionnaire) when obtaining or renewing whatever ID form your state requires to pass a background check. Make it say, 200 questions long and gear it so experts can tell if the person is inclined to commit extremist acts of any sort, for a myriad of reasons (emotional, mental, religious, monetary, etc). Not only would that provide an interesting mental health picture of the U.S at large, but if your results were concerning then you could be referred to a more thorough institution if some local authority (sheriff, or local health officer, perhaps?) considered them problematic. If you're normal, then great! You can own whatever the heck you want so long as you pass your background checks.
I have no clue if this could be even considered for legal or privacy reasons, but it seems reasonable to me. If you can prove you're not an extremist nutcase, then at that point it seems unreasonable to try and regulate your life further. It'd satisfy the left in that it (if it works as intended) prevents nutcases from coming close to a firearm and the right in that once you pass you don't need to regulate/register the actual weapons. I'm sure you'll hear the annoying, "He who gives up a little freedom for a little security blah blah blah" quote at least once or a million times, but I personally would rather leave my baggage at the door then have it all weighed and tagged 24/7, if that analogy makes sense.
And now it's 3:10 A.M and I need to be up in two hours...FML