I've said it a few times, I really dislike the idea of language specific servers. It takes something away from the 'ideal' splitting everyone by language, and I know I'd feel the difference; I always find myself a bit gladdened seeing another language being spoken and trying to divine a bit from the little I know, even moreso the few times I've managed to hold a conversation, if only a small one, without using the auto-translator. Not to mention the servers always feel alive because there's near always someone, from somewhere, playing. It doesn't matter if there'd be global ones, too, it just.. it feels so cynical and disappointing, even before we get into the economy implications and so forth, and the fact that the global servers will always suffer beside the language-specific ones.
A lot could probably be done to help with lag.. .. but making servers language specific's not going to help with that. Sticking a language tag by the server name does not equate to moving it to a different part of the world or optimising its data transfer architecture.
Anyway, no, I was so immensely disappointed .. and a little bit sickened, when Yoshida announced the intent for language specific servers. Not up to a full blown argument on the matter, though. I'll dig up my old posts on it if necessary but just stick me vehemently in the 'Don't' column, for now.