What I would LOVE to see, is an option on the IFE to select your language for the duration of the flight. By doing so, in your headset you would ONLY hear the in-flight announcements in your chosen language, and when announcements were being made in a language different from the one you selected, you would continue enjoying the IFE uninterrupted. I am always slightly annoyed by the fact that my movie or music is interrupted by announcements covering all required languages on the flight.

Those not plugging in to the IFE would of course be subject to the entire barrage of announcements.