"to ensure that our players regarded Haurchefant as positively as the JP player base was intended to"
It wasn't that we couldn't handle it, it's just that a lot of the EN playerbase wouldn't have liked him as much? JP Haurchefant's behaviour can easily be interpreted as "massive creeper" if you just do a straightforward translation and cutscene re-use.
Off-topic but I had wondered about that, so thanks!
