Another scenario. Guy has CCW, mostly for his vehicle. Leaves gun in locked car at airport parking, is gone for more than 24 hours, vehicle broken into and gun stolen. Now the victim is a criminal?

I guess it's only a misdemeanor, but whatevs.
Either way, you can't punish people for crimes that others committed. You just can't. Besides, that big bucket you keep talking about, it's mostly straw sales (which is already illegal). And like I said, I wouldn't be as opposed to requiring private sales to go through the FFL process. But no registry.