Solution: customer emails you to request a name
No it can't? Are you thinking of ISO-8859-1 or Windows codepage 1252 maybe?
삼성전자 can be written as Samseong jeonja in latin characters and translated literally as Tristar Electronics but they do business as samsung.com
I think it's cool that we figured out a way to encode CJK and other foreign script into ASCII-only domain names but if there's a serious concern about opening yourself to domain spoofing because someone picked the wrong encoding, just use ASCII characters.