That defeats the purpose of an internationalized dns system.
The whole point of getting unicode into domain names is so we can have 新浪首页.com so that it's no longer a latin alphabet centric system.
The whole point of getting unicode into domain names is so we can have 新浪首页.com so that it's no longer a latin alphabet centric system.
It seems that putting the allowed character set into the tld would be a pretty user-friendly way of doing that.
Edit: As an added bonus, tlds are centrally managed, and are already western/latin encoded. So why not customize it with a localized abbreviation for the language or tld type?