Foreign language episode titles

This is in part a follow-up to this thread.  First of all, does the policy of always using the episode title from the original release apply to all episodes, or only those which were never released in English?  The earlier thread consistently refers to "translated" titles, which would seem to imply that the policy applies only to episodes never released in English, but it's not entirely clear.

Assuming that this policy applies to all episodes, I have two major concerns with that.  One is that this makes navigating those episodes very confusing for viewers who are only familiar those episodes in another language.  Wouldn't it be better to have titles listed for every language an episode has been released in, and allow site visitors to view the titles which correspond to their own language?

My second concern is to do with languages not written in a conventional alphabet, such as Japanese.  Looking over four anime series, I found that two of them use the English language titles, and two use romanizations of the Japanese titles, which troubles me because so far as I know, the Japanese titles have no official romanization.  I realize that putting titles in kanji and other writing systems not represented on a standard keyboard may not be practical, but user-chosen romanizations are obviously not official titles, and I don't understand why anyone would prefer them over official English titles.