[Spoilers, kind of] Characters who are completely different between JP/ENG

[Nestama]

But in an MMORPG we need a common experience; all players should be experiencing the same game, plot and dialog. That means less creativity in localizing the game. To be honest I would prefer a good translation over localization. To me a good translation works by translating the meaning and intent of the words, not simply by doing a literal translation, and not by changing things.

And we technically are. Haurchefant is pretty much the only time I believe the localisation team has admitted they made a mistake (as his personality is different between JP and EN, FR, DE) and apologised. Ever since, they now work more closely with the scenario and cutscene teams, which implies that they're given the okay with what they do.

Midgardsormr was also explained.