I mean, I don't even know where to start in the pronunciation of most of them.
A good place to start is with the Japanese, since it's phonetic. All it takes is learning a single alphabet and then you'll be good for all Japanese "foreign" names.
Hyuran : Hue-ron
Elezen : Ele(as in 11)-zen
If that helps any. =P
As for whether or not I'll use the new names, I'm already adapting to them. When you start hearing the names in the voiced cutscenes, I think it'll become infinitely more natural.
Edit: Yeah, I like idiggory's phoneticizations for Hyuran and Roegadyn. I didn't even consider that people might pronounce "din" like "dinner". Edited, Sep 2nd 2009 1:25pm by BlackRagnarok