Hi, I'm not sure if it's feasible or not but a feature that I would really like to see is the ability to show multiple subtitles.
For instance choosing to display both Chinese and English subtitles at the same time. When I watch DVDs I use PowerDVD which has this option. When I watch most of my divx videos I use media player classic and use it's built in subtitle renderer in addition to the direct vobsub renderer to get multiple subtitles with divx as well.
I would like to use VLC as my main player as opposed to media player classic, but the inability to display multiple subtitles at once is holding me back. I find the feature useful when watching with people who don't all speak the same language, or when studying a foreign language.