Hi,
It would be great if the subtitle tracks in selection menu would be named along extension prefix, as you can see in VobSub. For example if the movie filename is XXX.avi and subtitle filenames are XXX.en.srt and XXX.de.srt, then the corresponding track names (or some track name suffix) should be 'en' and 'de'. Also it would be convenient to distinguish what subtitles are external and what embedded.
And another wish regarding subtitles: Move the Subtitles submenu from the Video submenu to the main level (as the Audio and Video submenus are).