"My perfect Christmas Present....
The Supreme court wakes up one Christmas morning, thinks for about 30 seconds on the 2nd amendment, and goes completely ballistic and takes the F out of ATF, and cuts a swath through the last 80 or so years of firearm restrictions in one shot.
They hit it so bad that the VPC, Brady Bunch and HCI are run right out of business and the antigun politicans are in homeless shelters.
That, and HK suddenly decides we don't suck after all, and CZ sends me a whole bunch of free toys, including one of those neat little cold war era scorpions with the shoulder holster (class 3 and with removeable silencer, of course)"
this reminds me of the calvin and hobbes scetch when calvin asked hobbes "if you could have anything in the world, what would you ask for?" and hobbes asked for a sandwich. calvin, of course, goes off, talking about hwo stupied hobbes is. the last panel shows a very satisfied hobbes eating his sandwich telling a very grumpy calvin "see i got what i wanted."
the first few things in your post are possible, but i somehow doubt hk would chang policy.