No matter how many restrictions you put in place there will still be cases when dumb people package things poorly:
As always a few bad apples ruin it for the rest of us. Every lipo I've ever purchased from a vendor has been well packaged. Seems to me that with minimal work they could offer lithium shipper permits to battery vendors and then do occasional random inspections of a package or two once or twice a year to ensure they are following packaging guidelines.
This starting to remind anyone of the gun control debates?