I'm used to XBMC's way of handling subtitles. You add the agents and then once in a movie or a tv show, you click "subtitles" and you get a list of subtitles available for that movie or Tv show from that specific agent/source/scraper.
There is no way of doing that in Plex. I've enabled subtitles on my Plex server but this is hit or miss kind of deal. Majority of shows will not have any subtitle option and since there is no way to add this in realtime (as in, choosing one while you play it), one will have to manually download the file by manually go to a source with a browser, then take that file and rename it, and finally add it to the the Library. This is so cumbersome that I will never do such. Furthermore, a force refresh is required once a change in subtitles in Agents in the server settings.
Is there a plan to add a feature to be able to download subtitles from within a Plex client and/or web interface, either before playing the file or during of Plex has not previously found one?
The same goes with trailers. If one is not found by Plex, an option to manually select one from a different source would be nice.