Spoke to a factory in Chongqing yesterday about these things, everything must be lots of 32 bikes or parts or what ever.
They make something like 3-5% margin on stuff in bulk and that is all they want to do - no changes no EPA DOT not interested in much else just a bundle of cash and piss off etc.
Logically there is no reason it cannot be redone and much better spec, NO importer wants to do it no buyer wants to pay more for a $1400 bike (exept CSC buyers who are smarter)
The answer to all the issues is the market, South America just buys them n sells them and some end up in the USA cause cheap cheap etc.
again I sat these are not sold (often) in china as we get other cheap crap styles and Chinese guys are not interested in more crap - now that is saying something
