This might of already been mentioned, but I couldn't find it anywhere...
For instance, if I have two english subtitles, one is for hearing impaired and one is just normal english subtitles, at the moment, plex only shows them as both ENGLISH.
There is no differentiation within the naming convention.
It would be awesome to be able to identify easily within plex which subtitle is which.
Frequently, when multiple subtitle tracks are present in a video, they'll have different names tagged in the container; Plex does not currently show these (it just shows the language field [which is often incorrect for forced tracks, actually]), and it definitely should. Being able to rename tracks (both subtitle and audio, I'd say) from Plex/Web would be great for the times when the in-file names are incorrect.